Bird migrations reveal climate change's impact
Birds' shifting migration timings act as living barometers, signaling climate change's disruption of seasonal weather and its ecological ripple effects across the globe.
Birds are increasingly flying earlier, signaling major shifts in seasonal weather patterns due to climate change. Many species time their journeys by daylight and temperature, but warmer global temperatures mean earlier springs. For example, over 300 North American bird species now begin their spring migration about nine days sooner than in 1966.
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