Both short and long distance migrants use energy-minimizing migration strategies in North American herring gulls.
Animal movement
Bird migration
Ecology
Generalist
Migration strategy
Migratory behaviour
Stopover
Telemetry
Tracking
Journal
Movement ecology
ISSN: 2051-3933
Titre abrégé: Mov Ecol
Pays: England
ID NLM: 101635009
Informations de publication
Date de publication:
2020
2020
Historique:
received:
13
11
2019
accepted:
27
04
2020
entrez:
19
6
2020
pubmed:
19
6
2020
medline:
19
6
2020
Statut:
epublish
Résumé
Recent studies have proposed that birds migrating short distances migrate at an overall slower pace, minimizing energy expenditure, while birds migrating long distances minimize time spent on migration to cope with seasonal changes in environmental conditions. We evaluated variability in the migration strategies of Herring Gulls ( Our research revealed that Herring Gulls breeding in the eastern Arctic migrate long distances to spend the winter in the Gulf of Mexico, traveling more than four times farther than gulls from Atlantic Canada during autumn migration. While all populations used indirect routes, the long distance migrants were the least direct. We found that regardless of the distance the population traveled, Herring Gulls migrated at a slower overall migration speed than predicted by Optimal Migration Theory, but the long distance migrants had higher speeds on travel days. While long distance migrants used more stopover days overall, relative to the distance travelled all four populations used a similar number of stopover days. When taken in context with other studies, we expect that the migration strategies of flexible generalist species like Herring Gulls may be more influenced by habitat and food resources than migration distance.
Sections du résumé
BACKGROUND
BACKGROUND
Recent studies have proposed that birds migrating short distances migrate at an overall slower pace, minimizing energy expenditure, while birds migrating long distances minimize time spent on migration to cope with seasonal changes in environmental conditions.
METHODS
METHODS
We evaluated variability in the migration strategies of Herring Gulls (
RESULTS
RESULTS
Our research revealed that Herring Gulls breeding in the eastern Arctic migrate long distances to spend the winter in the Gulf of Mexico, traveling more than four times farther than gulls from Atlantic Canada during autumn migration. While all populations used indirect routes, the long distance migrants were the least direct. We found that regardless of the distance the population traveled, Herring Gulls migrated at a slower overall migration speed than predicted by Optimal Migration Theory, but the long distance migrants had higher speeds on travel days. While long distance migrants used more stopover days overall, relative to the distance travelled all four populations used a similar number of stopover days.
CONCLUSIONS
CONCLUSIONS
When taken in context with other studies, we expect that the migration strategies of flexible generalist species like Herring Gulls may be more influenced by habitat and food resources than migration distance.
Identifiants
pubmed: 32549986
doi: 10.1186/s40462-020-00207-9
pii: 207
pmc: PMC7294659
doi:
Types de publication
Journal Article
Langues
eng
Pagination
26Informations de copyright
© The Author(s) 2020.
Déclaration de conflit d'intérêts
Competing interestsThe authors declare that they have no competing interests.
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