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Article
On the breeding grounds, migratory birds have limited time to breed and molt before autumn migration. However, few studies of long-distance migrants have examined the phenology of these events to determine what life-history trade-offs might resu[...]
Article
D. T. Tyler Flockhart, Auteur ; Jean-Baptiste Pichancourt, Auteur ; D. Ryan Norris, Auteur ; Tara G. Martin, AuteurThreats to migratory animals can occur at multiple periods of the annual cycle that are separated by thousands of kilometres and span international borders. Populations of the iconic monarch butterfly (Danaus plexippus) of eastern North America [...]
