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Songbirds are being trolled by climate change

Source
Quartz

Publication Date
2017-05-16

For a migratory bird, springtime in the northern hemisphere means bugs, and babies. In the first few warm days of the year North American insects emerge by the millions, to eat young leaves before trees begin to infuse them with an insect deterrent. And songbirds, who were wintering in South and Central America, fly up north to breed—and eat those bugs.

Content
https://qz.com/984130/songbirds-are-being-trolled-by-climate-change/