Early departures: Climate change blamed as tiny Alberta bird alters its migration south
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A tiny, insect-eating bird that breeds in Alberta is delaying its annual migration south, a change likely triggered by climate change that spells trouble for the fragile species.Early departures: Climate change blamed as tiny Alberta bird alters its migration south
A tiny, insect-eating bird that breeds in Alberta is delaying its annual migration south, a change likely triggered by climate change that spells trouble for the fragile species.