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Titre :
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Inter-annual roost site fidelity of a White-throated Sparrow (Zonotrichia albicollis) on the non-breeding grounds (2025)
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Auteurs :
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M. Elisa González, Auteur ;
Patrick J. Ruhl, Auteur
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Type de document :
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Article
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Dans :
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Wilson Journal of Ornithology (The) (137(3) September, 2025)
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Article en page(s) :
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478-486
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Mots-clés:
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Home range
;
descanso
;
gorrión
;
habitat
;
hábitat
;
invierno
;
radio telemetry
;
radio telemetría
;
roost
;
sparrow
;
winter
;
Ámbito hogareño
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Résumé :
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The survival of overwintering White-throated Sparrows (Zonotrichia albicollis) during the non-breeding season depends on the conservation of adequate foraging habitat as well as spatially discrete roosting sites comprised of dense vegetation. Although we know that many bird species occupy the same general roosting areas year after year, the degree of inter-annual roost site fidelity for individuals represents an important knowledge gap. The roost location data described in this paper represent a continuation of a previously published roost ecology study conducted in 2023. Here we provide additional natural history notes related to the inter-annual habitat use and roost site selection of an after-second-year, white-striped male that we tracked for 2 consecutive years (19 Jan–2 Mar 2023, and 19 Jan–29 Feb 2024; 68 total roosts [27 nights in 2023 and 41 nights in 2024]). We observed a 100% overlap of this individual’s 2024 non-breeding core roost home range within its 2023 core roost home range. Perhaps even more noteworthy was the observation that this individual sparrow occupied the same exact roost site as it did in 2023, a Japanese honeysuckle (Lonicera japonica) bush, for 37 nights during the non-breeding season in 2024. Although we recognize that inference from our study is limited to the roosting behavior of one individual sparrow, we suggest that these observations highlight the need for future research initiatives to explore the conservation implications of microhabitat preferences at inter-annual roost sites for other migratory songbirds outside of the breeding range.
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En ligne :
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https://doi.org/10.1080/15594491.2025.2498185
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