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Spring cold snaps harm nesting tree swallows, but some show resilience

  • April 6, 2026 at 7:40 PM
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Spring cold snaps harm nesting tree swallows, but some show resilience
Warming temperatures from climate change cause tree swallows to nest up to two weeks earlier than they did in the 1970s, but early spring cold snaps can hinder nestlings' growth and survival, according to a new study that incorporates a four-decade Cornell dataset on the birds.

Originally published at Phys.org

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