Spatial and temporal variations in the White-tailed Eagle Haliaeetus albicilla breeding diet revealed by prey remains
Capsule: Despite its population increase, the White-tailed Eagle Haliaeetus albicilla has not become food-limited, and does not pose a serious threat to birds of conservation concern in the region east of the Baltic Sea. Aims: We aimed to test variations in the main prey groups and dietary niche bre...
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Language: | English |
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Online Access: | http://gtc.oai.elaba.lt/documents/73883871.pdf http://gtc.lvb.lt/GTC:ELABAPDB73883871&prefLang=en_US |
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ftlithuaniansrc:oai:elaba:73883871 2023-05-15T16:32:41+02:00 Spatial and temporal variations in the White-tailed Eagle Haliaeetus albicilla breeding diet revealed by prey remains Dementavičius, Deivis Rumbutis, Saulius Virbickas, Tomas Vaitkuvienė, Daiva Dagys, Mindaugas Treinys, Rimgaudas 2020 application/pdf http://gtc.oai.elaba.lt/documents/73883871.pdf http://gtc.lvb.lt/GTC:ELABAPDB73883871&prefLang=en_US eng eng info:eu-repo/semantics/altIdentifier/doi/10.1080/00063657.2020.1808591 http://gtc.oai.elaba.lt/documents/73883871.pdf http://gtc.lvb.lt/GTC:ELABAPDB73883871&prefLang=en_US info:eu-repo/semantics/openAccess Bird study, Oxon : Taylor and Francis Ltd., 2020, vol. 67, iss. 2, p. 206-216 ISSN 0006-3657 eISSN 1944-6705 populations patterns reproduction info:eu-repo/semantics/article 2020 ftlithuaniansrc https://doi.org/10.1080/00063657.2020.1808591 2021-12-02T01:01:27Z Capsule: Despite its population increase, the White-tailed Eagle Haliaeetus albicilla has not become food-limited, and does not pose a serious threat to birds of conservation concern in the region east of the Baltic Sea. Aims: We aimed to test variations in the main prey groups and dietary niche breadth of White-tailed Eagles through the years and along an environmental gradient as well as to evaluate the extent of predation on bird species of conservation concern. Methods: Prey remains were collected during nestling ringing from successful nests located in Lithuania. Results: The frequency of the prey groups varied along an environmental gradient, with a general pattern of increasing avian prey consumed by pairs breeding in areas with less abundant aquatic habitats. The frequency of alternative prey (i.e. terrestrial birds, mammals) and dietary niche breadth did not increase between 2005 and 2018 and during which time the White-tailed Eagle population nearly doubled. Instead, the occurrence of Northern Pike Esox lucius remains, which was the most frequent single prey species, increased throughout the study period. Bird species of conservation concern constituted only a small fraction of all the prey identified. Conclusions: The White-tailed Eagle has not become more dependent on alternative prey despite its population increase. Article in Journal/Newspaper Haliaeetus albicilla White-tailed eagle LSRC VL (Lithuanian Social Research Centre Virtual Library) Bird Study 67 2 206 216 |
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Open Polar |
collection |
LSRC VL (Lithuanian Social Research Centre Virtual Library) |
op_collection_id |
ftlithuaniansrc |
language |
English |
topic |
populations patterns reproduction |
spellingShingle |
populations patterns reproduction Dementavičius, Deivis Rumbutis, Saulius Virbickas, Tomas Vaitkuvienė, Daiva Dagys, Mindaugas Treinys, Rimgaudas Spatial and temporal variations in the White-tailed Eagle Haliaeetus albicilla breeding diet revealed by prey remains |
topic_facet |
populations patterns reproduction |
description |
Capsule: Despite its population increase, the White-tailed Eagle Haliaeetus albicilla has not become food-limited, and does not pose a serious threat to birds of conservation concern in the region east of the Baltic Sea. Aims: We aimed to test variations in the main prey groups and dietary niche breadth of White-tailed Eagles through the years and along an environmental gradient as well as to evaluate the extent of predation on bird species of conservation concern. Methods: Prey remains were collected during nestling ringing from successful nests located in Lithuania. Results: The frequency of the prey groups varied along an environmental gradient, with a general pattern of increasing avian prey consumed by pairs breeding in areas with less abundant aquatic habitats. The frequency of alternative prey (i.e. terrestrial birds, mammals) and dietary niche breadth did not increase between 2005 and 2018 and during which time the White-tailed Eagle population nearly doubled. Instead, the occurrence of Northern Pike Esox lucius remains, which was the most frequent single prey species, increased throughout the study period. Bird species of conservation concern constituted only a small fraction of all the prey identified. Conclusions: The White-tailed Eagle has not become more dependent on alternative prey despite its population increase. |
format |
Article in Journal/Newspaper |
author |
Dementavičius, Deivis Rumbutis, Saulius Virbickas, Tomas Vaitkuvienė, Daiva Dagys, Mindaugas Treinys, Rimgaudas |
author_facet |
Dementavičius, Deivis Rumbutis, Saulius Virbickas, Tomas Vaitkuvienė, Daiva Dagys, Mindaugas Treinys, Rimgaudas |
author_sort |
Dementavičius, Deivis |
title |
Spatial and temporal variations in the White-tailed Eagle Haliaeetus albicilla breeding diet revealed by prey remains |
title_short |
Spatial and temporal variations in the White-tailed Eagle Haliaeetus albicilla breeding diet revealed by prey remains |
title_full |
Spatial and temporal variations in the White-tailed Eagle Haliaeetus albicilla breeding diet revealed by prey remains |
title_fullStr |
Spatial and temporal variations in the White-tailed Eagle Haliaeetus albicilla breeding diet revealed by prey remains |
title_full_unstemmed |
Spatial and temporal variations in the White-tailed Eagle Haliaeetus albicilla breeding diet revealed by prey remains |
title_sort |
spatial and temporal variations in the white-tailed eagle haliaeetus albicilla breeding diet revealed by prey remains |
publishDate |
2020 |
url |
http://gtc.oai.elaba.lt/documents/73883871.pdf http://gtc.lvb.lt/GTC:ELABAPDB73883871&prefLang=en_US |
genre |
Haliaeetus albicilla White-tailed eagle |
genre_facet |
Haliaeetus albicilla White-tailed eagle |
op_source |
Bird study, Oxon : Taylor and Francis Ltd., 2020, vol. 67, iss. 2, p. 206-216 ISSN 0006-3657 eISSN 1944-6705 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1080/00063657.2020.1808591 http://gtc.oai.elaba.lt/documents/73883871.pdf http://gtc.lvb.lt/GTC:ELABAPDB73883871&prefLang=en_US |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1080/00063657.2020.1808591 |
container_title |
Bird Study |
container_volume |
67 |
container_issue |
2 |
container_start_page |
206 |
op_container_end_page |
216 |
_version_ |
1766022432578076672 |