Morphological changes in hooded crows (Corvus cornix) related to urbanization

IntroductionUrbanization has led to a recent surge of interest in urban biodiversity, and wildlife responses to urban environments have become a hot topic in environmental sciences and biodiversity conservation. However, adaptations to urbanization and the factors driving them are less understood.MethodologyWe studied possible morphological adaptations to urban environments by comparing body size and condition of adult and post-fledging juvenile Hooded Crows (Corvus cornix), a bird species that has recently colonised cities in eastern Europe, between two urban and two rural populations, between two different-sized cities and between locations within one city in Hungary.ResultsAdult crows from the rural cropland-woodland area were lighter and in poorer condition than crows from the rural grassland area or those from the medium-sized city. There were no differences in morphological traits of adults or juveniles between the large and the medium-sized cities. The comparison of multiple trapping locations within the city of Debrecen showed that juveniles in the Zoo area were larger, heavier, and in better condition than individuals in the other locations and that adults in the Zoo had longer wings and tarsi than adults in other locations. Our results indicated that urbanized Hooded Crows showed some morphological changes to live in urban environments, but we did not find large-scale, consistent differences between urban and rural areas. However, we found significant variation within one city.DiscussionOur results suggest that urban-rural environmental differences may be mediated by local factors, of which the year-round availability of anthropogenic food is fundamental. Such food is widely available in cities, although its quality may be suboptimal for bird development. Our study suggests that the variation in body size variables is probably more site-dependent than gradient-dependent and shows that documenting wildlife adaptations to urban environments requires multiple spatial scales ranging from regional to local (within-city) scales. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Isma Benmazouz [verfasserIn] Jukka Jokimäki [verfasserIn] Lajos Juhász [verfasserIn] Marja-Liisa Kaisanlahti-Jokimäki [verfasserIn] Petra Paládi [verfasserIn] Gábor Kardos [verfasserIn] Szabolcs Lengyel [verfasserIn] László Kövér [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	adaptation anthropogenic food body condition city corvid heat island

Übergeordnetes Werk:	In: Frontiers in Ecology and Evolution - Frontiers Media S.A., 2014, 11(2023)
Übergeordnetes Werk:	volume:11 ; year:2023

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3389/fevo.2023.1196075

Katalog-ID:	DOAJ090883217

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520			\|a IntroductionUrbanization has led to a recent surge of interest in urban biodiversity, and wildlife responses to urban environments have become a hot topic in environmental sciences and biodiversity conservation. However, adaptations to urbanization and the factors driving them are less understood.MethodologyWe studied possible morphological adaptations to urban environments by comparing body size and condition of adult and post-fledging juvenile Hooded Crows (Corvus cornix), a bird species that has recently colonised cities in eastern Europe, between two urban and two rural populations, between two different-sized cities and between locations within one city in Hungary.ResultsAdult crows from the rural cropland-woodland area were lighter and in poorer condition than crows from the rural grassland area or those from the medium-sized city. There were no differences in morphological traits of adults or juveniles between the large and the medium-sized cities. The comparison of multiple trapping locations within the city of Debrecen showed that juveniles in the Zoo area were larger, heavier, and in better condition than individuals in the other locations and that adults in the Zoo had longer wings and tarsi than adults in other locations. Our results indicated that urbanized Hooded Crows showed some morphological changes to live in urban environments, but we did not find large-scale, consistent differences between urban and rural areas. However, we found significant variation within one city.DiscussionOur results suggest that urban-rural environmental differences may be mediated by local factors, of which the year-round availability of anthropogenic food is fundamental. Such food is widely available in cities, although its quality may be suboptimal for bird development. Our study suggests that the variation in body size variables is probably more site-dependent than gradient-dependent and shows that documenting wildlife adaptations to urban environments requires multiple spatial scales ranging from regional to local (within-city) scales.
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allfields	10.3389/fevo.2023.1196075 doi (DE-627)DOAJ090883217 (DE-599)DOAJ758a8bba176b4229baa5b7e9f4eaa0fe DE-627 ger DE-627 rakwb eng QH359-425 QH540-549.5 Isma Benmazouz verfasserin aut Morphological changes in hooded crows (Corvus cornix) related to urbanization 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier IntroductionUrbanization has led to a recent surge of interest in urban biodiversity, and wildlife responses to urban environments have become a hot topic in environmental sciences and biodiversity conservation. However, adaptations to urbanization and the factors driving them are less understood.MethodologyWe studied possible morphological adaptations to urban environments by comparing body size and condition of adult and post-fledging juvenile Hooded Crows (Corvus cornix), a bird species that has recently colonised cities in eastern Europe, between two urban and two rural populations, between two different-sized cities and between locations within one city in Hungary.ResultsAdult crows from the rural cropland-woodland area were lighter and in poorer condition than crows from the rural grassland area or those from the medium-sized city. There were no differences in morphological traits of adults or juveniles between the large and the medium-sized cities. The comparison of multiple trapping locations within the city of Debrecen showed that juveniles in the Zoo area were larger, heavier, and in better condition than individuals in the other locations and that adults in the Zoo had longer wings and tarsi than adults in other locations. Our results indicated that urbanized Hooded Crows showed some morphological changes to live in urban environments, but we did not find large-scale, consistent differences between urban and rural areas. However, we found significant variation within one city.DiscussionOur results suggest that urban-rural environmental differences may be mediated by local factors, of which the year-round availability of anthropogenic food is fundamental. Such food is widely available in cities, although its quality may be suboptimal for bird development. Our study suggests that the variation in body size variables is probably more site-dependent than gradient-dependent and shows that documenting wildlife adaptations to urban environments requires multiple spatial scales ranging from regional to local (within-city) scales. adaptation anthropogenic food body condition city corvid heat island Evolution Ecology Jukka Jokimäki verfasserin aut Lajos Juhász verfasserin aut Marja-Liisa Kaisanlahti-Jokimäki verfasserin aut Petra Paládi verfasserin aut Petra Paládi verfasserin aut Gábor Kardos verfasserin aut Szabolcs Lengyel verfasserin aut László Kövér verfasserin aut In Frontiers in Ecology and Evolution Frontiers Media S.A., 2014 11(2023) (DE-627)774108215 (DE-600)2745634-1 2296701X nnns volume:11 year:2023 https://doi.org/10.3389/fevo.2023.1196075 kostenfrei https://doaj.org/article/758a8bba176b4229baa5b7e9f4eaa0fe kostenfrei https://www.frontiersin.org/articles/10.3389/fevo.2023.1196075/full kostenfrei https://doaj.org/toc/2296-701X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2023
spelling	10.3389/fevo.2023.1196075 doi (DE-627)DOAJ090883217 (DE-599)DOAJ758a8bba176b4229baa5b7e9f4eaa0fe DE-627 ger DE-627 rakwb eng QH359-425 QH540-549.5 Isma Benmazouz verfasserin aut Morphological changes in hooded crows (Corvus cornix) related to urbanization 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier IntroductionUrbanization has led to a recent surge of interest in urban biodiversity, and wildlife responses to urban environments have become a hot topic in environmental sciences and biodiversity conservation. However, adaptations to urbanization and the factors driving them are less understood.MethodologyWe studied possible morphological adaptations to urban environments by comparing body size and condition of adult and post-fledging juvenile Hooded Crows (Corvus cornix), a bird species that has recently colonised cities in eastern Europe, between two urban and two rural populations, between two different-sized cities and between locations within one city in Hungary.ResultsAdult crows from the rural cropland-woodland area were lighter and in poorer condition than crows from the rural grassland area or those from the medium-sized city. There were no differences in morphological traits of adults or juveniles between the large and the medium-sized cities. The comparison of multiple trapping locations within the city of Debrecen showed that juveniles in the Zoo area were larger, heavier, and in better condition than individuals in the other locations and that adults in the Zoo had longer wings and tarsi than adults in other locations. Our results indicated that urbanized Hooded Crows showed some morphological changes to live in urban environments, but we did not find large-scale, consistent differences between urban and rural areas. However, we found significant variation within one city.DiscussionOur results suggest that urban-rural environmental differences may be mediated by local factors, of which the year-round availability of anthropogenic food is fundamental. Such food is widely available in cities, although its quality may be suboptimal for bird development. Our study suggests that the variation in body size variables is probably more site-dependent than gradient-dependent and shows that documenting wildlife adaptations to urban environments requires multiple spatial scales ranging from regional to local (within-city) scales. adaptation anthropogenic food body condition city corvid heat island Evolution Ecology Jukka Jokimäki verfasserin aut Lajos Juhász verfasserin aut Marja-Liisa Kaisanlahti-Jokimäki verfasserin aut Petra Paládi verfasserin aut Petra Paládi verfasserin aut Gábor Kardos verfasserin aut Szabolcs Lengyel verfasserin aut László Kövér verfasserin aut In Frontiers in Ecology and Evolution Frontiers Media S.A., 2014 11(2023) (DE-627)774108215 (DE-600)2745634-1 2296701X nnns volume:11 year:2023 https://doi.org/10.3389/fevo.2023.1196075 kostenfrei https://doaj.org/article/758a8bba176b4229baa5b7e9f4eaa0fe kostenfrei https://www.frontiersin.org/articles/10.3389/fevo.2023.1196075/full kostenfrei https://doaj.org/toc/2296-701X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2023
allfields_unstemmed	10.3389/fevo.2023.1196075 doi (DE-627)DOAJ090883217 (DE-599)DOAJ758a8bba176b4229baa5b7e9f4eaa0fe DE-627 ger DE-627 rakwb eng QH359-425 QH540-549.5 Isma Benmazouz verfasserin aut Morphological changes in hooded crows (Corvus cornix) related to urbanization 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier IntroductionUrbanization has led to a recent surge of interest in urban biodiversity, and wildlife responses to urban environments have become a hot topic in environmental sciences and biodiversity conservation. However, adaptations to urbanization and the factors driving them are less understood.MethodologyWe studied possible morphological adaptations to urban environments by comparing body size and condition of adult and post-fledging juvenile Hooded Crows (Corvus cornix), a bird species that has recently colonised cities in eastern Europe, between two urban and two rural populations, between two different-sized cities and between locations within one city in Hungary.ResultsAdult crows from the rural cropland-woodland area were lighter and in poorer condition than crows from the rural grassland area or those from the medium-sized city. There were no differences in morphological traits of adults or juveniles between the large and the medium-sized cities. The comparison of multiple trapping locations within the city of Debrecen showed that juveniles in the Zoo area were larger, heavier, and in better condition than individuals in the other locations and that adults in the Zoo had longer wings and tarsi than adults in other locations. Our results indicated that urbanized Hooded Crows showed some morphological changes to live in urban environments, but we did not find large-scale, consistent differences between urban and rural areas. However, we found significant variation within one city.DiscussionOur results suggest that urban-rural environmental differences may be mediated by local factors, of which the year-round availability of anthropogenic food is fundamental. Such food is widely available in cities, although its quality may be suboptimal for bird development. Our study suggests that the variation in body size variables is probably more site-dependent than gradient-dependent and shows that documenting wildlife adaptations to urban environments requires multiple spatial scales ranging from regional to local (within-city) scales. adaptation anthropogenic food body condition city corvid heat island Evolution Ecology Jukka Jokimäki verfasserin aut Lajos Juhász verfasserin aut Marja-Liisa Kaisanlahti-Jokimäki verfasserin aut Petra Paládi verfasserin aut Petra Paládi verfasserin aut Gábor Kardos verfasserin aut Szabolcs Lengyel verfasserin aut László Kövér verfasserin aut In Frontiers in Ecology and Evolution Frontiers Media S.A., 2014 11(2023) (DE-627)774108215 (DE-600)2745634-1 2296701X nnns volume:11 year:2023 https://doi.org/10.3389/fevo.2023.1196075 kostenfrei https://doaj.org/article/758a8bba176b4229baa5b7e9f4eaa0fe kostenfrei https://www.frontiersin.org/articles/10.3389/fevo.2023.1196075/full kostenfrei https://doaj.org/toc/2296-701X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2023
allfieldsGer	10.3389/fevo.2023.1196075 doi (DE-627)DOAJ090883217 (DE-599)DOAJ758a8bba176b4229baa5b7e9f4eaa0fe DE-627 ger DE-627 rakwb eng QH359-425 QH540-549.5 Isma Benmazouz verfasserin aut Morphological changes in hooded crows (Corvus cornix) related to urbanization 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier IntroductionUrbanization has led to a recent surge of interest in urban biodiversity, and wildlife responses to urban environments have become a hot topic in environmental sciences and biodiversity conservation. However, adaptations to urbanization and the factors driving them are less understood.MethodologyWe studied possible morphological adaptations to urban environments by comparing body size and condition of adult and post-fledging juvenile Hooded Crows (Corvus cornix), a bird species that has recently colonised cities in eastern Europe, between two urban and two rural populations, between two different-sized cities and between locations within one city in Hungary.ResultsAdult crows from the rural cropland-woodland area were lighter and in poorer condition than crows from the rural grassland area or those from the medium-sized city. There were no differences in morphological traits of adults or juveniles between the large and the medium-sized cities. The comparison of multiple trapping locations within the city of Debrecen showed that juveniles in the Zoo area were larger, heavier, and in better condition than individuals in the other locations and that adults in the Zoo had longer wings and tarsi than adults in other locations. Our results indicated that urbanized Hooded Crows showed some morphological changes to live in urban environments, but we did not find large-scale, consistent differences between urban and rural areas. However, we found significant variation within one city.DiscussionOur results suggest that urban-rural environmental differences may be mediated by local factors, of which the year-round availability of anthropogenic food is fundamental. Such food is widely available in cities, although its quality may be suboptimal for bird development. Our study suggests that the variation in body size variables is probably more site-dependent than gradient-dependent and shows that documenting wildlife adaptations to urban environments requires multiple spatial scales ranging from regional to local (within-city) scales. adaptation anthropogenic food body condition city corvid heat island Evolution Ecology Jukka Jokimäki verfasserin aut Lajos Juhász verfasserin aut Marja-Liisa Kaisanlahti-Jokimäki verfasserin aut Petra Paládi verfasserin aut Petra Paládi verfasserin aut Gábor Kardos verfasserin aut Szabolcs Lengyel verfasserin aut László Kövér verfasserin aut In Frontiers in Ecology and Evolution Frontiers Media S.A., 2014 11(2023) (DE-627)774108215 (DE-600)2745634-1 2296701X nnns volume:11 year:2023 https://doi.org/10.3389/fevo.2023.1196075 kostenfrei https://doaj.org/article/758a8bba176b4229baa5b7e9f4eaa0fe kostenfrei https://www.frontiersin.org/articles/10.3389/fevo.2023.1196075/full kostenfrei https://doaj.org/toc/2296-701X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2023
allfieldsSound	10.3389/fevo.2023.1196075 doi (DE-627)DOAJ090883217 (DE-599)DOAJ758a8bba176b4229baa5b7e9f4eaa0fe DE-627 ger DE-627 rakwb eng QH359-425 QH540-549.5 Isma Benmazouz verfasserin aut Morphological changes in hooded crows (Corvus cornix) related to urbanization 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier IntroductionUrbanization has led to a recent surge of interest in urban biodiversity, and wildlife responses to urban environments have become a hot topic in environmental sciences and biodiversity conservation. However, adaptations to urbanization and the factors driving them are less understood.MethodologyWe studied possible morphological adaptations to urban environments by comparing body size and condition of adult and post-fledging juvenile Hooded Crows (Corvus cornix), a bird species that has recently colonised cities in eastern Europe, between two urban and two rural populations, between two different-sized cities and between locations within one city in Hungary.ResultsAdult crows from the rural cropland-woodland area were lighter and in poorer condition than crows from the rural grassland area or those from the medium-sized city. There were no differences in morphological traits of adults or juveniles between the large and the medium-sized cities. The comparison of multiple trapping locations within the city of Debrecen showed that juveniles in the Zoo area were larger, heavier, and in better condition than individuals in the other locations and that adults in the Zoo had longer wings and tarsi than adults in other locations. Our results indicated that urbanized Hooded Crows showed some morphological changes to live in urban environments, but we did not find large-scale, consistent differences between urban and rural areas. However, we found significant variation within one city.DiscussionOur results suggest that urban-rural environmental differences may be mediated by local factors, of which the year-round availability of anthropogenic food is fundamental. Such food is widely available in cities, although its quality may be suboptimal for bird development. Our study suggests that the variation in body size variables is probably more site-dependent than gradient-dependent and shows that documenting wildlife adaptations to urban environments requires multiple spatial scales ranging from regional to local (within-city) scales. adaptation anthropogenic food body condition city corvid heat island Evolution Ecology Jukka Jokimäki verfasserin aut Lajos Juhász verfasserin aut Marja-Liisa Kaisanlahti-Jokimäki verfasserin aut Petra Paládi verfasserin aut Petra Paládi verfasserin aut Gábor Kardos verfasserin aut Szabolcs Lengyel verfasserin aut László Kövér verfasserin aut In Frontiers in Ecology and Evolution Frontiers Media S.A., 2014 11(2023) (DE-627)774108215 (DE-600)2745634-1 2296701X nnns volume:11 year:2023 https://doi.org/10.3389/fevo.2023.1196075 kostenfrei https://doaj.org/article/758a8bba176b4229baa5b7e9f4eaa0fe kostenfrei https://www.frontiersin.org/articles/10.3389/fevo.2023.1196075/full kostenfrei https://doaj.org/toc/2296-701X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2023
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authorswithroles_txt_mv	Isma Benmazouz @@aut@@ Jukka Jokimäki @@aut@@ Lajos Juhász @@aut@@ Marja-Liisa Kaisanlahti-Jokimäki @@aut@@ Petra Paládi @@aut@@ Gábor Kardos @@aut@@ Szabolcs Lengyel @@aut@@ László Kövér @@aut@@
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topic_title	QH359-425 QH540-549.5 Morphological changes in hooded crows (Corvus cornix) related to urbanization adaptation anthropogenic food body condition city corvid heat island
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title	Morphological changes in hooded crows (Corvus cornix) related to urbanization
ctrlnum	(DE-627)DOAJ090883217 (DE-599)DOAJ758a8bba176b4229baa5b7e9f4eaa0fe
title_full	Morphological changes in hooded crows (Corvus cornix) related to urbanization
author_sort	Isma Benmazouz
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author_browse	Isma Benmazouz Jukka Jokimäki Lajos Juhász Marja-Liisa Kaisanlahti-Jokimäki Petra Paládi Gábor Kardos Szabolcs Lengyel László Kövér
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title_sort	morphological changes in hooded crows (corvus cornix) related to urbanization
callnumber	QH359-425
title_auth	Morphological changes in hooded crows (Corvus cornix) related to urbanization
abstract	IntroductionUrbanization has led to a recent surge of interest in urban biodiversity, and wildlife responses to urban environments have become a hot topic in environmental sciences and biodiversity conservation. However, adaptations to urbanization and the factors driving them are less understood.MethodologyWe studied possible morphological adaptations to urban environments by comparing body size and condition of adult and post-fledging juvenile Hooded Crows (Corvus cornix), a bird species that has recently colonised cities in eastern Europe, between two urban and two rural populations, between two different-sized cities and between locations within one city in Hungary.ResultsAdult crows from the rural cropland-woodland area were lighter and in poorer condition than crows from the rural grassland area or those from the medium-sized city. There were no differences in morphological traits of adults or juveniles between the large and the medium-sized cities. The comparison of multiple trapping locations within the city of Debrecen showed that juveniles in the Zoo area were larger, heavier, and in better condition than individuals in the other locations and that adults in the Zoo had longer wings and tarsi than adults in other locations. Our results indicated that urbanized Hooded Crows showed some morphological changes to live in urban environments, but we did not find large-scale, consistent differences between urban and rural areas. However, we found significant variation within one city.DiscussionOur results suggest that urban-rural environmental differences may be mediated by local factors, of which the year-round availability of anthropogenic food is fundamental. Such food is widely available in cities, although its quality may be suboptimal for bird development. Our study suggests that the variation in body size variables is probably more site-dependent than gradient-dependent and shows that documenting wildlife adaptations to urban environments requires multiple spatial scales ranging from regional to local (within-city) scales.
abstractGer	IntroductionUrbanization has led to a recent surge of interest in urban biodiversity, and wildlife responses to urban environments have become a hot topic in environmental sciences and biodiversity conservation. However, adaptations to urbanization and the factors driving them are less understood.MethodologyWe studied possible morphological adaptations to urban environments by comparing body size and condition of adult and post-fledging juvenile Hooded Crows (Corvus cornix), a bird species that has recently colonised cities in eastern Europe, between two urban and two rural populations, between two different-sized cities and between locations within one city in Hungary.ResultsAdult crows from the rural cropland-woodland area were lighter and in poorer condition than crows from the rural grassland area or those from the medium-sized city. There were no differences in morphological traits of adults or juveniles between the large and the medium-sized cities. The comparison of multiple trapping locations within the city of Debrecen showed that juveniles in the Zoo area were larger, heavier, and in better condition than individuals in the other locations and that adults in the Zoo had longer wings and tarsi than adults in other locations. Our results indicated that urbanized Hooded Crows showed some morphological changes to live in urban environments, but we did not find large-scale, consistent differences between urban and rural areas. However, we found significant variation within one city.DiscussionOur results suggest that urban-rural environmental differences may be mediated by local factors, of which the year-round availability of anthropogenic food is fundamental. Such food is widely available in cities, although its quality may be suboptimal for bird development. Our study suggests that the variation in body size variables is probably more site-dependent than gradient-dependent and shows that documenting wildlife adaptations to urban environments requires multiple spatial scales ranging from regional to local (within-city) scales.
abstract_unstemmed	IntroductionUrbanization has led to a recent surge of interest in urban biodiversity, and wildlife responses to urban environments have become a hot topic in environmental sciences and biodiversity conservation. However, adaptations to urbanization and the factors driving them are less understood.MethodologyWe studied possible morphological adaptations to urban environments by comparing body size and condition of adult and post-fledging juvenile Hooded Crows (Corvus cornix), a bird species that has recently colonised cities in eastern Europe, between two urban and two rural populations, between two different-sized cities and between locations within one city in Hungary.ResultsAdult crows from the rural cropland-woodland area were lighter and in poorer condition than crows from the rural grassland area or those from the medium-sized city. There were no differences in morphological traits of adults or juveniles between the large and the medium-sized cities. The comparison of multiple trapping locations within the city of Debrecen showed that juveniles in the Zoo area were larger, heavier, and in better condition than individuals in the other locations and that adults in the Zoo had longer wings and tarsi than adults in other locations. Our results indicated that urbanized Hooded Crows showed some morphological changes to live in urban environments, but we did not find large-scale, consistent differences between urban and rural areas. However, we found significant variation within one city.DiscussionOur results suggest that urban-rural environmental differences may be mediated by local factors, of which the year-round availability of anthropogenic food is fundamental. Such food is widely available in cities, although its quality may be suboptimal for bird development. Our study suggests that the variation in body size variables is probably more site-dependent than gradient-dependent and shows that documenting wildlife adaptations to urban environments requires multiple spatial scales ranging from regional to local (within-city) scales.
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title_short	Morphological changes in hooded crows (Corvus cornix) related to urbanization
url	https://doi.org/10.3389/fevo.2023.1196075 https://doaj.org/article/758a8bba176b4229baa5b7e9f4eaa0fe https://www.frontiersin.org/articles/10.3389/fevo.2023.1196075/full https://doaj.org/toc/2296-701X
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