Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Resource predictability drives interannual variation in migratory behavior in a long-lived bird
Baert, J.M.; Stienen, E.W.M.; Verbruggen, F.; Van de Weghe, N.; Lens, L.; Müller, W. (2022). Resource predictability drives interannual variation in migratory behavior in a long-lived bird. Behav. Ecol. 33(1): 263-270. https://dx.doi.org/10.1093/beheco/arab132
In: Behavioral Ecology. Oxford University Press: New York. ISSN 1045-2249; e-ISSN 1465-7279
|   |
| Trefwoord |
Larus fuscus Linnaeus, 1758 [WoRMS]
|
| Auteurs | | Top |
- Baert, J.M.
- Stienen, E.W.M.
- Verbruggen, F.
|
- Van de Weghe, N.
- Lens, L.
- Müller, W.
|
|
| Abstract |
There is a growing awareness that experience may play a major role in migratory decisions, especially in long-lived species. However, empirical support remains to date scarce. Here, we use multiyear GPS-tracking data on 28 adult Lesser Black-backed Gulls (Larus fuscus), a long-lived species for which migratory strategies typically consist of a series of long stopovers, to assess how experience affects interannual variation in stopover selection. We expect that food source reliability should play a pivotal role, as it both reduces the uncertainty on food availability across years, and enables for more efficient foraging during stopovers by reducing searching efforts. We found that during stopovers gulls indeed developed high fidelity to particular foraging locations, which strongly reduced the daily distance travelled for foraging. When revisiting stopovers in consecutive years, birds used over 80% of foraging locations from the previous year. Although the average fidelity to stopovers across years was a high as 85%, stopovers where birds showed high foraging site fidelity were up to 60% more likely to be revisited compared to stopover with low foraging site fidelity. Accordingly, birds using more stopovers with reliable foraging opportunities showed significantly less interannual variation in their stopover use than birds using stopovers with less reliable foraging opportunities. Our results thus highlight the need to further deepen our understanding of the role of cognitive processes in individual variation in migratory behavior. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
