Early birds.
Concern is growing about the impact of climate change on organisms but there's much uncertainty about its effects. A new European study of two bird species does not provide good news.
Williams
Nigel
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D025041:Animal Migration / Q000502:physiology; D000818:Animals; D002909:Chronobiology Phenomena; D002980:Climate; D005060:Europe; D017752:Greenhouse Effect; D012726:Sexual Behavior, Animal / Q000502:physiology*; D020308:Songbirds / Q000502:physiology*; D013045:Species Specificity; D013997:Time Factors