Environmental drivers of roosting body mass variation in boreal Great Tits Parus major
Small wintering passerines adaptively modulate daily body mass acquisition as part of their energy management policy. However, whether birds optimize overnight mass loss or body mass at dawn remains poorly understood. We studied environmental correlates of individual variation in body mass at dusk,...
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crwiley:10.1111/ibi.12483 2024-06-02T08:06:29+00:00 Environmental drivers of roosting body mass variation in boreal Great Tits Parus major Broggi, Juli Koivula, Kari Hohtola, Esa Orell, Markku Oulun Yliopisto Seventh Framework Programme Consejería de Economía, Innovación, Ciencia y Empleo, Junta de Andalucía Suomen Akatemia Biotieteiden ja Ympäristön Tutkimuksen Toimikunta 2017 http://dx.doi.org/10.1111/ibi.12483 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fibi.12483 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ibi.12483 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ibis volume 159, issue 4, page 919-924 ISSN 0019-1019 1474-919X journal-article 2017 crwiley https://doi.org/10.1111/ibi.12483 2024-05-03T11:50:50Z Small wintering passerines adaptively modulate daily body mass acquisition as part of their energy management policy. However, whether birds optimize overnight mass loss or body mass at dawn remains poorly understood. We studied environmental correlates of individual variation in body mass at dusk, overnight mass loss and body mass at dawn in a wild population of Great Tits Parus major wintering in northern Fennoscandia. Body mass at dusk, overnight mass loss and body mass at dawn were independent of prevailing conditions despite extremely low night ambient temperatures. Body mass at dusk was higher in males than in females, and decreased throughout winter and when snowfall was higher in the previous month. Overnight mass loss increased with precipitation during the previous week and tended to be higher in mid‐winter, when nights were longest. However, birds reduced overnight mass loss with higher temperatures in the previous week and higher precipitation in the previous 2 weeks. Dawn body mass was strongly correlated with dusk body mass and overnight mass loss, and showed only mild associations with weather variables once dusk mass was accounted for. Body mass in roosting boreal Great Tits seems to be constrained by recent snowfall as the winter progresses, but otherwise appears to be mostly unaffected by previous and current temperatures, suggesting a regular use of facultative hypothermia. Article in Journal/Newspaper Fennoscandia Wiley Online Library Parus ENVELOPE(3.950,3.950,-71.983,-71.983) Ibis 159 4 919 924 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Small wintering passerines adaptively modulate daily body mass acquisition as part of their energy management policy. However, whether birds optimize overnight mass loss or body mass at dawn remains poorly understood. We studied environmental correlates of individual variation in body mass at dusk, overnight mass loss and body mass at dawn in a wild population of Great Tits Parus major wintering in northern Fennoscandia. Body mass at dusk, overnight mass loss and body mass at dawn were independent of prevailing conditions despite extremely low night ambient temperatures. Body mass at dusk was higher in males than in females, and decreased throughout winter and when snowfall was higher in the previous month. Overnight mass loss increased with precipitation during the previous week and tended to be higher in mid‐winter, when nights were longest. However, birds reduced overnight mass loss with higher temperatures in the previous week and higher precipitation in the previous 2 weeks. Dawn body mass was strongly correlated with dusk body mass and overnight mass loss, and showed only mild associations with weather variables once dusk mass was accounted for. Body mass in roosting boreal Great Tits seems to be constrained by recent snowfall as the winter progresses, but otherwise appears to be mostly unaffected by previous and current temperatures, suggesting a regular use of facultative hypothermia. |
author2 |
Oulun Yliopisto Seventh Framework Programme Consejería de Economía, Innovación, Ciencia y Empleo, Junta de Andalucía Suomen Akatemia Biotieteiden ja Ympäristön Tutkimuksen Toimikunta |
format |
Article in Journal/Newspaper |
author |
Broggi, Juli Koivula, Kari Hohtola, Esa Orell, Markku |
spellingShingle |
Broggi, Juli Koivula, Kari Hohtola, Esa Orell, Markku Environmental drivers of roosting body mass variation in boreal Great Tits Parus major |
author_facet |
Broggi, Juli Koivula, Kari Hohtola, Esa Orell, Markku |
author_sort |
Broggi, Juli |
title |
Environmental drivers of roosting body mass variation in boreal Great Tits Parus major |
title_short |
Environmental drivers of roosting body mass variation in boreal Great Tits Parus major |
title_full |
Environmental drivers of roosting body mass variation in boreal Great Tits Parus major |
title_fullStr |
Environmental drivers of roosting body mass variation in boreal Great Tits Parus major |
title_full_unstemmed |
Environmental drivers of roosting body mass variation in boreal Great Tits Parus major |
title_sort |
environmental drivers of roosting body mass variation in boreal great tits parus major |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/ibi.12483 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fibi.12483 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ibi.12483 |
long_lat |
ENVELOPE(3.950,3.950,-71.983,-71.983) |
geographic |
Parus |
geographic_facet |
Parus |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
Ibis volume 159, issue 4, page 919-924 ISSN 0019-1019 1474-919X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/ibi.12483 |
container_title |
Ibis |
container_volume |
159 |
container_issue |
4 |
container_start_page |
919 |
op_container_end_page |
924 |
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1800751435062706176 |