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Summary 1. There is increasing concern about the world’s animal migrations. With many land-use and climatological changes… Expand Breeding habitats strongly influence duck reproduction and survival. The boreal biome harbours a large share of the world’s… Expand Summary The East Asian-Australasian Flyway supports the greatest diversity and populations of migratory birds globally, as well… Expand The migration of monarch butterflies (Danaus plexippus) from Canada and the United States to overwintering sites in Mexico is one… Expand Spring migration is generally considered as a crucial period of the year for many birds, not the least due to its supposed… Expand Wetlands are key habitats connected physically and socially with processes occurring over a much wider territory. The biotic… Expand Tundra Swans (Cygnus columbianus columbianus) fitted with satellite trans- mitters (PTTs) on the outer coast of the Yukon… Expand We obtained esophageal food samples from 311 mallards (Anas platyrhynchos) and 94 wood ducks (Aix sponsa) and body weights from 2… Expand