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Great tits are killing birds and eating their brains. Climate change may be to blame.

Trending story found on www.popsci.com
Great tits are killing birds and eating their brains. Climate change may be to blame.
Every year, little black-and-white birds called pied flycatchers make the lengthy trek from sub-saharan Africa to northern Europe to feast on caterpillars, claim a nest, and have babies. This typically goes off without a hitch, and the birds return to Africa a few months later, offspring in tow. But recently, some flycatchers have arrived to find their nesting sites occupied by haughty, territorial great tits. And those birds don’t just chase flycatchers away—they brutally attack them, kill them, and eat their brains.
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