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California birds adjust nest timing in a warming climate

Cara J

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Birds in California have shifted their breeding season about five to 12 days earlier than a century ago, according to new research. TWS member Steven Beissinger, a professor of ecology and conservation biology at the University of California, Berkeley, and his colleagues looked back in time to the early 1900s to understand how birds have responded to climate change in the state by comparing detection data collected then to current detection data. They reviewed notebooks dating back to 1911 from Joseph Grinnell, the first director of the campus’ Museum of Vertebrate Zoology, who logged lists of birds he and his colleagues saw across California. “As they were collecting specimens, Grinnell was taking copious field notes at all the places they went to record what they saw, serving as an early biodiversity inventory of the state and hoping it would be a great resource for students of the future,” said Beissinger, coauthor of the study published in Proceedings of the National Academy of Sciences. Starting in 2005 Beissinger and his colleagues, as part of the Grinnell Resurvey Project, began revisiting places throughout the state where Grinnell and his students recorded birds and mammals in their notebooks, including the Central Valley and [...]


Read more: http://wildlife.org/california-birds-adjust-nest-timing-in-a-warming-climate/

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