作者: Marcel Klaassen , Åke Lindström , Hans Meltofte , Theunis Piersma
DOI: 10.1038/35101654
关键词: Ornithology 、 Juvenile 、 Arctic 、 Tundra 、 Habitat 、 Ecology 、 Feather 、 Geography 、 Wader 、 Nutrient
摘要: Birds prepare their eggs from recently ingested nutrients ('income' breeders) or body stores ('capital' breeders)1. As summers are short at Arctic latitudes, migrants have been presumed to bring for egg production previous habitats, so that they can start breeding immediately upon arrival1,2,3. But we show here laid by 10 different wader species 12 localities in northeast Greenland and Canada produced originating tundra as inferred carbon stable-isotope ratios eggs, natal down, juvenile adult feathers.