This article discusses unusual winter hummingbird activity in southern Arizona, likely influenced by climate change. Hummingbirds typically migrate to the U.S. to breed in spring after winters spent in Central America. NASA's research analyzed 23 years of migration data, revealing that eastern migrations are influenced by large-scale atmospheric conditions, while western migrations correlate more with local sea surface temperatures. Such findings emphasize the impact of climate variations on bird migration patterns, showcasing how shifting environmental factors can alter natural behaviors.
This winter-humming at our feeder is due to climate change, of course.
In the East, bird migration was linked to large-scale atmospheric waves that affect the planet's weather and climate.
NASA data revealed that Western bird migration was more closely linked to air and sea surface temperature in the Pacific Ocean.
Scientists analyzed 23 years of bird migration data to determine the variability in the birds' arrival times each spring.
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