Russian cuckoo invasion spells trouble for Alaskan birds

Common cuckoos and oriental cuckoos in eastern Russia appear to be expanding their breeding range into western Alaska, where songbirds are naive to the cuckoos’ wily ways, researchers report. A new study suggests the North American birds could suffer significant losses if cuckoos become established in Alaska.
Russian cuckoo invasion spells trouble for Alaskan birds
Russian cuckoo invasion spells trouble for Alaskan birds
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