Danger, risk and anti‐predator behavior in the life history of long‐distance migratory sandpipers
Two recent and independent studies both estimate substantially lower survival rates of semipalmated Calidris pusilla than of western C. mauri sandpipers, consistent with the pronounced multi‐decade population decline of the former. Migratory danger has climbed steadily for both these long‐distance m...
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crwiley:10.1111/jav.03002 2024-06-23T07:52:37+00:00 Danger, risk and anti‐predator behavior in the life history of long‐distance migratory sandpipers Ydenberg, Ronald C. Tavera, Eveling A. Lank, David B. 2022 http://dx.doi.org/10.1111/jav.03002 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jav.03002 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jav.03002 en eng Wiley http://creativecommons.org/licenses/by/3.0/ Journal of Avian Biology volume 2022, issue 6 ISSN 0908-8857 1600-048X journal-article 2022 crwiley https://doi.org/10.1111/jav.03002 2024-05-31T08:15:19Z Two recent and independent studies both estimate substantially lower survival rates of semipalmated Calidris pusilla than of western C. mauri sandpipers, consistent with the pronounced multi‐decade population decline of the former. Migratory danger has climbed steadily for both these long‐distance migrants since the mid‐1970s as the number of peregrine falcons Falco peregrinus increased. These predators are present on the Pacific flyway as co‐migrants and are a natural (though now more abundant) feature of western sandpiper southbound migrations. Adjustments to migratory speed, timing and routing enable them to mitigate the danger. On the Atlantic flyway peregrines were introduced and breeding populations established in the 1980s at key staging areas, creating a novel hazard for southbound semipalmated sandpipers. Adjustments to migratory timing and speed do not aid in eluding such resident predators, and alternative routes are not available. Semipalmated sandpipers as a consequence have few effective defenses to counter this heightened danger, and we hypothesize that migratory mortality has increased, making over‐summering (i.e. skipping a breeding season) more advantageous. The risk effects (i.e. the consequent reduction in population growth rate) so generated are substantial, and may be able to account for a large portion of the population decline. Article in Journal/Newspaper Falco peregrinus Wiley Online Library Pacific Journal of Avian Biology 2022 6 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Two recent and independent studies both estimate substantially lower survival rates of semipalmated Calidris pusilla than of western C. mauri sandpipers, consistent with the pronounced multi‐decade population decline of the former. Migratory danger has climbed steadily for both these long‐distance migrants since the mid‐1970s as the number of peregrine falcons Falco peregrinus increased. These predators are present on the Pacific flyway as co‐migrants and are a natural (though now more abundant) feature of western sandpiper southbound migrations. Adjustments to migratory speed, timing and routing enable them to mitigate the danger. On the Atlantic flyway peregrines were introduced and breeding populations established in the 1980s at key staging areas, creating a novel hazard for southbound semipalmated sandpipers. Adjustments to migratory timing and speed do not aid in eluding such resident predators, and alternative routes are not available. Semipalmated sandpipers as a consequence have few effective defenses to counter this heightened danger, and we hypothesize that migratory mortality has increased, making over‐summering (i.e. skipping a breeding season) more advantageous. The risk effects (i.e. the consequent reduction in population growth rate) so generated are substantial, and may be able to account for a large portion of the population decline. |
format |
Article in Journal/Newspaper |
author |
Ydenberg, Ronald C. Tavera, Eveling A. Lank, David B. |
spellingShingle |
Ydenberg, Ronald C. Tavera, Eveling A. Lank, David B. Danger, risk and anti‐predator behavior in the life history of long‐distance migratory sandpipers |
author_facet |
Ydenberg, Ronald C. Tavera, Eveling A. Lank, David B. |
author_sort |
Ydenberg, Ronald C. |
title |
Danger, risk and anti‐predator behavior in the life history of long‐distance migratory sandpipers |
title_short |
Danger, risk and anti‐predator behavior in the life history of long‐distance migratory sandpipers |
title_full |
Danger, risk and anti‐predator behavior in the life history of long‐distance migratory sandpipers |
title_fullStr |
Danger, risk and anti‐predator behavior in the life history of long‐distance migratory sandpipers |
title_full_unstemmed |
Danger, risk and anti‐predator behavior in the life history of long‐distance migratory sandpipers |
title_sort |
danger, risk and anti‐predator behavior in the life history of long‐distance migratory sandpipers |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/jav.03002 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jav.03002 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jav.03002 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Falco peregrinus |
genre_facet |
Falco peregrinus |
op_source |
Journal of Avian Biology volume 2022, issue 6 ISSN 0908-8857 1600-048X |
op_rights |
http://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.1111/jav.03002 |
container_title |
Journal of Avian Biology |
container_volume |
2022 |
container_issue |
6 |
_version_ |
1802643964214378496 |