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- de Jong, Adriaan, et al. Show all 6 Authors
- Ibis 2017 v.159 no.1 pp. 66-75
- Anser fabalis; carbon; conservation status; deuterium; feathers; migratory behavior; molting; monitoring; nitrogen; stable isotopes; sulfur; summer; water birds; Denmark; England; Germany; Norway; Poland; Scandinavia; Scotland; Siberia; Sweden
- ... Fundamental to effective management of migratory waterbird populations is an understanding of their flyway delineation. Taiga Bean Geese Anser fabalis fabalis wintering in NW Denmark, Scotland and England are considered to originate from northern and central Sweden, southern and central Norway (‘Western flyway’), those wintering in southern Sweden, NE and southern Denmark are considered to origina ...
- de Jong, Adriaan, et al. Show all 3 Authors
- Behavioral ecology and sociobiology 2013 v.67 no.7 pp. 1089-1096
- Numenius; adults; birds; eggs; evolutionarily stable strategy; flight; hatching; nesting; nests; predation; predators
- ... Flight initiation distances (FIDs) of nesting birds approached by a predator likely reflect evolutionary stable strategies in which birds make trade-offs between adult survival and reproductive success. Here, we test if FID (a) had an impact on hatching success, (b) was adjusted to current conditions, and (c) was consistent for individual nests. All experiments were performed with a human approach ...