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Arrival-breeding interval is flexible in a songbird and is not constrained by migration carry-over effects.
J Anim Ecol
November 2024
Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.
As spring phenology advances with climate change, so too must the timing of life cycle events. Breeding at the right time is critical in many species as it maximizes fitness. For long-distance migratory birds, flexibility in the duration of the arrival-breeding interval (pre-breeding period) may allow populations to adjust their timing of breeding.
View Article and Find Full Text PDFA Late-Arriving but Welcome Advance in Sarcoma Therapy.
N Engl J Med
September 2024
From the Department of Sarcoma Medical Oncology, University of Texas M.D. Anderson Cancer Center, Houston.
Arriving late and lean at a stopover site is selected against in a declining migratory bird population.
J Anim Ecol
October 2023
Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Den Burg, The Netherlands.
Loss and/or deterioration of refuelling habitats have caused population declines in many migratory bird species but whether this results from unequal mortality among individuals varying in migration traits remains to be shown. Based on 13 years of body mass and size data of great knots (Calidris tenuirostris) at a stopover site of the Yellow Sea, combined with resightings of individuals marked at this stopover site along the East Asian-Australasian Flyway, we assessed year to year changes in annual apparent survival rates, and how apparent survival differed between migration phenotypes (i.e.
View Article and Find Full Text PDFLimited flexibility in departure timing of migratory passerines at the East-Mediterranean flyway.
Sci Rep
March 2021
School of Zoology, Faculty of Life Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel.
The rapid pace of current global warming lead to the advancement of spring migration in the majority of long-distance migratory bird species. While data on arrival timing to breeding grounds in Europe is plentiful, information from the African departure sites are scarce. Here we analysed changes in arrival timing at a stopover site in Israel and any links to Enhanced Vegetation Index (EVI) on the species-specific African non-breeding range in three migratory passerines between 2000-2017.
View Article and Find Full Text PDFNon-parallel changes in songbird migration timing are not explained by changes in stopover duration.
PeerJ
May 2020
Department of Biology, Tufts University, Medford, MA, USA.
Shifts in the timing of animal migration are widespread and well-documented; however, the mechanism underlying these changes is largely unknown. In this study, we test the hypothesis that systematic changes in stopover duration-the time that individuals spend resting and refueling at a site-are driving shifts in songbird migration timing. Specifically, we predicted that increases in stopover duration at our study site could generate increases in passage duration-the number of days that a study site is occupied by a particular species-by changing the temporal breadth of observations and vise versa.
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