Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest

Abstract Several hypotheses propose an adaptive function of non-breeding nests (female attraction, decoys for nest predators and safe places for roosting). Alternatively, non-breeding nests may be structures abandoned before completion. Grass Wrens Cistothorus platensis build two types of non-breedi...
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Autor*in:	Llambías, Paulo E. [verfasserIn] Jefferies, María M. Zarco, Agustín Garrido, Paula S. Arrieta, Ramiro S.

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	Breeding biology Construction behaviour Nest architecture Parental care

Anmerkung:	© Deutsche Ornithologen-Gesellschaft e.V. 2022

Übergeordnetes Werk:	Enthalten in: Journal für Ornithologie - Oxford : Blackwell, 1853, 163(2022), 4 vom: 27. Juni, Seite 911-921
Übergeordnetes Werk:	volume:163 ; year:2022 ; number:4 ; day:27 ; month:06 ; pages:911-921

Links:	Volltext

DOI / URN:	10.1007/s10336-022-01992-3

Katalog-ID:	SPR04814343X

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allfields	10.1007/s10336-022-01992-3 doi (DE-627)SPR04814343X (SPR)s10336-022-01992-3-e DE-627 ger DE-627 rakwb eng Llambías, Paulo E. verfasserin (orcid)0000-0002-9412-5167 aut Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Deutsche Ornithologen-Gesellschaft e.V. 2022 Abstract Several hypotheses propose an adaptive function of non-breeding nests (female attraction, decoys for nest predators and safe places for roosting). Alternatively, non-breeding nests may be structures abandoned before completion. Grass Wrens Cistothorus platensis build two types of non-breeding nests: platform and dummy nests. Platforms are rudimentary accumulations of grasses whilst dummies are dome-shaped, similar in appearance to breeding nests. We assess nest ontogeny, structure, dimensions and placement of non-breeding and breeding nests to provide evidence of abandonment. We predict that non-breeding nests would lack several of the nest layers present in breeding nests but would not differ in nesting microhabitat. Platforms had an incomplete structural layer and lacked most of the functional layers present in the breeding nests. Dummy nests had a complete structural layer, but often lacked some of the layers (lining and nest cup) that were added during the later stages of building. Breeding and non-breeding nests did not differ in seven nesting microhabitat variables. These results are in line with the hypothesis that platforms and dummy nests are structures abandoned during the building process. Differences between non-breeding and breeding nests in both nest and entrance orientation suggest that nests with an NNE orientation were less likely to be abandoned. Hence, wrens may abandon nests if they perceive unsuitable ambient conditions at the nest site. However, other causes of desertion such as the encounter of a predator during building were not evaluated. The study of non-breeding nests may provide the opportunity to evaluate the costs and benefits of nest desertion as well as insights in how function can shape nest architecture and location. Breeding biology (dpeaa)DE-He213 Construction behaviour (dpeaa)DE-He213 Nest architecture (dpeaa)DE-He213 Parental care (dpeaa)DE-He213 Jefferies, María M. aut Zarco, Agustín aut Garrido, Paula S. aut Arrieta, Ramiro S. aut Enthalten in Journal für Ornithologie Oxford : Blackwell, 1853 163(2022), 4 vom: 27. Juni, Seite 911-921 (DE-627)323607284 (DE-600)2026338-7 1439-0361 nnns volume:163 year:2022 number:4 day:27 month:06 pages:911-921 https://dx.doi.org/10.1007/s10336-022-01992-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4305 AR 163 2022 4 27 06 911-921
spelling	10.1007/s10336-022-01992-3 doi (DE-627)SPR04814343X (SPR)s10336-022-01992-3-e DE-627 ger DE-627 rakwb eng Llambías, Paulo E. verfasserin (orcid)0000-0002-9412-5167 aut Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Deutsche Ornithologen-Gesellschaft e.V. 2022 Abstract Several hypotheses propose an adaptive function of non-breeding nests (female attraction, decoys for nest predators and safe places for roosting). Alternatively, non-breeding nests may be structures abandoned before completion. Grass Wrens Cistothorus platensis build two types of non-breeding nests: platform and dummy nests. Platforms are rudimentary accumulations of grasses whilst dummies are dome-shaped, similar in appearance to breeding nests. We assess nest ontogeny, structure, dimensions and placement of non-breeding and breeding nests to provide evidence of abandonment. We predict that non-breeding nests would lack several of the nest layers present in breeding nests but would not differ in nesting microhabitat. Platforms had an incomplete structural layer and lacked most of the functional layers present in the breeding nests. Dummy nests had a complete structural layer, but often lacked some of the layers (lining and nest cup) that were added during the later stages of building. Breeding and non-breeding nests did not differ in seven nesting microhabitat variables. These results are in line with the hypothesis that platforms and dummy nests are structures abandoned during the building process. Differences between non-breeding and breeding nests in both nest and entrance orientation suggest that nests with an NNE orientation were less likely to be abandoned. Hence, wrens may abandon nests if they perceive unsuitable ambient conditions at the nest site. However, other causes of desertion such as the encounter of a predator during building were not evaluated. The study of non-breeding nests may provide the opportunity to evaluate the costs and benefits of nest desertion as well as insights in how function can shape nest architecture and location. Breeding biology (dpeaa)DE-He213 Construction behaviour (dpeaa)DE-He213 Nest architecture (dpeaa)DE-He213 Parental care (dpeaa)DE-He213 Jefferies, María M. aut Zarco, Agustín aut Garrido, Paula S. aut Arrieta, Ramiro S. aut Enthalten in Journal für Ornithologie Oxford : Blackwell, 1853 163(2022), 4 vom: 27. Juni, Seite 911-921 (DE-627)323607284 (DE-600)2026338-7 1439-0361 nnns volume:163 year:2022 number:4 day:27 month:06 pages:911-921 https://dx.doi.org/10.1007/s10336-022-01992-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4305 AR 163 2022 4 27 06 911-921
allfields_unstemmed	10.1007/s10336-022-01992-3 doi (DE-627)SPR04814343X (SPR)s10336-022-01992-3-e DE-627 ger DE-627 rakwb eng Llambías, Paulo E. verfasserin (orcid)0000-0002-9412-5167 aut Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Deutsche Ornithologen-Gesellschaft e.V. 2022 Abstract Several hypotheses propose an adaptive function of non-breeding nests (female attraction, decoys for nest predators and safe places for roosting). Alternatively, non-breeding nests may be structures abandoned before completion. Grass Wrens Cistothorus platensis build two types of non-breeding nests: platform and dummy nests. Platforms are rudimentary accumulations of grasses whilst dummies are dome-shaped, similar in appearance to breeding nests. We assess nest ontogeny, structure, dimensions and placement of non-breeding and breeding nests to provide evidence of abandonment. We predict that non-breeding nests would lack several of the nest layers present in breeding nests but would not differ in nesting microhabitat. Platforms had an incomplete structural layer and lacked most of the functional layers present in the breeding nests. Dummy nests had a complete structural layer, but often lacked some of the layers (lining and nest cup) that were added during the later stages of building. Breeding and non-breeding nests did not differ in seven nesting microhabitat variables. These results are in line with the hypothesis that platforms and dummy nests are structures abandoned during the building process. Differences between non-breeding and breeding nests in both nest and entrance orientation suggest that nests with an NNE orientation were less likely to be abandoned. Hence, wrens may abandon nests if they perceive unsuitable ambient conditions at the nest site. However, other causes of desertion such as the encounter of a predator during building were not evaluated. The study of non-breeding nests may provide the opportunity to evaluate the costs and benefits of nest desertion as well as insights in how function can shape nest architecture and location. Breeding biology (dpeaa)DE-He213 Construction behaviour (dpeaa)DE-He213 Nest architecture (dpeaa)DE-He213 Parental care (dpeaa)DE-He213 Jefferies, María M. aut Zarco, Agustín aut Garrido, Paula S. aut Arrieta, Ramiro S. aut Enthalten in Journal für Ornithologie Oxford : Blackwell, 1853 163(2022), 4 vom: 27. Juni, Seite 911-921 (DE-627)323607284 (DE-600)2026338-7 1439-0361 nnns volume:163 year:2022 number:4 day:27 month:06 pages:911-921 https://dx.doi.org/10.1007/s10336-022-01992-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4305 AR 163 2022 4 27 06 911-921
allfieldsGer	10.1007/s10336-022-01992-3 doi (DE-627)SPR04814343X (SPR)s10336-022-01992-3-e DE-627 ger DE-627 rakwb eng Llambías, Paulo E. verfasserin (orcid)0000-0002-9412-5167 aut Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Deutsche Ornithologen-Gesellschaft e.V. 2022 Abstract Several hypotheses propose an adaptive function of non-breeding nests (female attraction, decoys for nest predators and safe places for roosting). Alternatively, non-breeding nests may be structures abandoned before completion. Grass Wrens Cistothorus platensis build two types of non-breeding nests: platform and dummy nests. Platforms are rudimentary accumulations of grasses whilst dummies are dome-shaped, similar in appearance to breeding nests. We assess nest ontogeny, structure, dimensions and placement of non-breeding and breeding nests to provide evidence of abandonment. We predict that non-breeding nests would lack several of the nest layers present in breeding nests but would not differ in nesting microhabitat. Platforms had an incomplete structural layer and lacked most of the functional layers present in the breeding nests. Dummy nests had a complete structural layer, but often lacked some of the layers (lining and nest cup) that were added during the later stages of building. Breeding and non-breeding nests did not differ in seven nesting microhabitat variables. These results are in line with the hypothesis that platforms and dummy nests are structures abandoned during the building process. Differences between non-breeding and breeding nests in both nest and entrance orientation suggest that nests with an NNE orientation were less likely to be abandoned. Hence, wrens may abandon nests if they perceive unsuitable ambient conditions at the nest site. However, other causes of desertion such as the encounter of a predator during building were not evaluated. The study of non-breeding nests may provide the opportunity to evaluate the costs and benefits of nest desertion as well as insights in how function can shape nest architecture and location. Breeding biology (dpeaa)DE-He213 Construction behaviour (dpeaa)DE-He213 Nest architecture (dpeaa)DE-He213 Parental care (dpeaa)DE-He213 Jefferies, María M. aut Zarco, Agustín aut Garrido, Paula S. aut Arrieta, Ramiro S. aut Enthalten in Journal für Ornithologie Oxford : Blackwell, 1853 163(2022), 4 vom: 27. Juni, Seite 911-921 (DE-627)323607284 (DE-600)2026338-7 1439-0361 nnns volume:163 year:2022 number:4 day:27 month:06 pages:911-921 https://dx.doi.org/10.1007/s10336-022-01992-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4305 AR 163 2022 4 27 06 911-921
allfieldsSound	10.1007/s10336-022-01992-3 doi (DE-627)SPR04814343X (SPR)s10336-022-01992-3-e DE-627 ger DE-627 rakwb eng Llambías, Paulo E. verfasserin (orcid)0000-0002-9412-5167 aut Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Deutsche Ornithologen-Gesellschaft e.V. 2022 Abstract Several hypotheses propose an adaptive function of non-breeding nests (female attraction, decoys for nest predators and safe places for roosting). Alternatively, non-breeding nests may be structures abandoned before completion. Grass Wrens Cistothorus platensis build two types of non-breeding nests: platform and dummy nests. Platforms are rudimentary accumulations of grasses whilst dummies are dome-shaped, similar in appearance to breeding nests. We assess nest ontogeny, structure, dimensions and placement of non-breeding and breeding nests to provide evidence of abandonment. We predict that non-breeding nests would lack several of the nest layers present in breeding nests but would not differ in nesting microhabitat. Platforms had an incomplete structural layer and lacked most of the functional layers present in the breeding nests. Dummy nests had a complete structural layer, but often lacked some of the layers (lining and nest cup) that were added during the later stages of building. Breeding and non-breeding nests did not differ in seven nesting microhabitat variables. These results are in line with the hypothesis that platforms and dummy nests are structures abandoned during the building process. Differences between non-breeding and breeding nests in both nest and entrance orientation suggest that nests with an NNE orientation were less likely to be abandoned. Hence, wrens may abandon nests if they perceive unsuitable ambient conditions at the nest site. However, other causes of desertion such as the encounter of a predator during building were not evaluated. The study of non-breeding nests may provide the opportunity to evaluate the costs and benefits of nest desertion as well as insights in how function can shape nest architecture and location. Breeding biology (dpeaa)DE-He213 Construction behaviour (dpeaa)DE-He213 Nest architecture (dpeaa)DE-He213 Parental care (dpeaa)DE-He213 Jefferies, María M. aut Zarco, Agustín aut Garrido, Paula S. aut Arrieta, Ramiro S. aut Enthalten in Journal für Ornithologie Oxford : Blackwell, 1853 163(2022), 4 vom: 27. Juni, Seite 911-921 (DE-627)323607284 (DE-600)2026338-7 1439-0361 nnns volume:163 year:2022 number:4 day:27 month:06 pages:911-921 https://dx.doi.org/10.1007/s10336-022-01992-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4305 AR 163 2022 4 27 06 911-921
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author	Llambías, Paulo E.
spellingShingle	Llambías, Paulo E. misc Breeding biology misc Construction behaviour misc Nest architecture misc Parental care Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest
authorStr	Llambías, Paulo E.
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topic_title	Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest Breeding biology (dpeaa)DE-He213 Construction behaviour (dpeaa)DE-He213 Nest architecture (dpeaa)DE-He213 Parental care (dpeaa)DE-He213
topic	misc Breeding biology misc Construction behaviour misc Nest architecture misc Parental care
topic_unstemmed	misc Breeding biology misc Construction behaviour misc Nest architecture misc Parental care
topic_browse	misc Breeding biology misc Construction behaviour misc Nest architecture misc Parental care
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title	Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest
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title_full	Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest
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author_browse	Llambías, Paulo E. Jefferies, María M. Zarco, Agustín Garrido, Paula S. Arrieta, Ramiro S.
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title_sort	evidence of nest abandonment in grass wrens cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest
title_auth	Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest
abstract	Abstract Several hypotheses propose an adaptive function of non-breeding nests (female attraction, decoys for nest predators and safe places for roosting). Alternatively, non-breeding nests may be structures abandoned before completion. Grass Wrens Cistothorus platensis build two types of non-breeding nests: platform and dummy nests. Platforms are rudimentary accumulations of grasses whilst dummies are dome-shaped, similar in appearance to breeding nests. We assess nest ontogeny, structure, dimensions and placement of non-breeding and breeding nests to provide evidence of abandonment. We predict that non-breeding nests would lack several of the nest layers present in breeding nests but would not differ in nesting microhabitat. Platforms had an incomplete structural layer and lacked most of the functional layers present in the breeding nests. Dummy nests had a complete structural layer, but often lacked some of the layers (lining and nest cup) that were added during the later stages of building. Breeding and non-breeding nests did not differ in seven nesting microhabitat variables. These results are in line with the hypothesis that platforms and dummy nests are structures abandoned during the building process. Differences between non-breeding and breeding nests in both nest and entrance orientation suggest that nests with an NNE orientation were less likely to be abandoned. Hence, wrens may abandon nests if they perceive unsuitable ambient conditions at the nest site. However, other causes of desertion such as the encounter of a predator during building were not evaluated. The study of non-breeding nests may provide the opportunity to evaluate the costs and benefits of nest desertion as well as insights in how function can shape nest architecture and location. © Deutsche Ornithologen-Gesellschaft e.V. 2022
abstractGer	Abstract Several hypotheses propose an adaptive function of non-breeding nests (female attraction, decoys for nest predators and safe places for roosting). Alternatively, non-breeding nests may be structures abandoned before completion. Grass Wrens Cistothorus platensis build two types of non-breeding nests: platform and dummy nests. Platforms are rudimentary accumulations of grasses whilst dummies are dome-shaped, similar in appearance to breeding nests. We assess nest ontogeny, structure, dimensions and placement of non-breeding and breeding nests to provide evidence of abandonment. We predict that non-breeding nests would lack several of the nest layers present in breeding nests but would not differ in nesting microhabitat. Platforms had an incomplete structural layer and lacked most of the functional layers present in the breeding nests. Dummy nests had a complete structural layer, but often lacked some of the layers (lining and nest cup) that were added during the later stages of building. Breeding and non-breeding nests did not differ in seven nesting microhabitat variables. These results are in line with the hypothesis that platforms and dummy nests are structures abandoned during the building process. Differences between non-breeding and breeding nests in both nest and entrance orientation suggest that nests with an NNE orientation were less likely to be abandoned. Hence, wrens may abandon nests if they perceive unsuitable ambient conditions at the nest site. However, other causes of desertion such as the encounter of a predator during building were not evaluated. The study of non-breeding nests may provide the opportunity to evaluate the costs and benefits of nest desertion as well as insights in how function can shape nest architecture and location. © Deutsche Ornithologen-Gesellschaft e.V. 2022
abstract_unstemmed	Abstract Several hypotheses propose an adaptive function of non-breeding nests (female attraction, decoys for nest predators and safe places for roosting). Alternatively, non-breeding nests may be structures abandoned before completion. Grass Wrens Cistothorus platensis build two types of non-breeding nests: platform and dummy nests. Platforms are rudimentary accumulations of grasses whilst dummies are dome-shaped, similar in appearance to breeding nests. We assess nest ontogeny, structure, dimensions and placement of non-breeding and breeding nests to provide evidence of abandonment. We predict that non-breeding nests would lack several of the nest layers present in breeding nests but would not differ in nesting microhabitat. Platforms had an incomplete structural layer and lacked most of the functional layers present in the breeding nests. Dummy nests had a complete structural layer, but often lacked some of the layers (lining and nest cup) that were added during the later stages of building. Breeding and non-breeding nests did not differ in seven nesting microhabitat variables. These results are in line with the hypothesis that platforms and dummy nests are structures abandoned during the building process. Differences between non-breeding and breeding nests in both nest and entrance orientation suggest that nests with an NNE orientation were less likely to be abandoned. Hence, wrens may abandon nests if they perceive unsuitable ambient conditions at the nest site. However, other causes of desertion such as the encounter of a predator during building were not evaluated. The study of non-breeding nests may provide the opportunity to evaluate the costs and benefits of nest desertion as well as insights in how function can shape nest architecture and location. © Deutsche Ornithologen-Gesellschaft e.V. 2022
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title_short	Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest
url	https://dx.doi.org/10.1007/s10336-022-01992-3
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Evidence of nest abandonment in Grass Wrens Cistothorus platensis suggest that non-breeding nests are not structures that differ in function from breeding nest

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