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A white-crowned sparrow from Washington state sounds very different from its Californian cousins.

The white-crowned sparrow, which has distinctive white and black head stripes, is found across much of the US and Canada, where its songs have been widely studied.

“What they’ll do, because they are curious, is to pop up for a second. Even the white-crowned sparrow, which we don’t have during the summer, for a sparrow they are quite colorful.”

She hears a chirp and immediately identifies it as a white-crowned sparrow.

In Washington, some of the birds most at risk in a 3 degrees Celsius warming include the rufous hummingbird, the white-crowned sparrow and the Swainson’s thrush.