NEW YORK, ITHACA, N.Y., and PORT ROWAN, Ont. — The 26th annual Great Backyard Bird Count (GBBC) takes place Friday, February 17, through Monday, February 20. Bird and nature lovers everywhere unite in the effort to tally as many of the world's bird species as possible over these four days. Combined with other bird counts, GBBC results help create a clearer picture of how birds are faring—whether individual species are are declining, increasing, or holding steady in the face of habitat loss, climate change, and other threats. "Take a moment over this long weekend to observe, listen to, and count birds and improve your health, too. Birdwatching and being in nature can reduce stress and improve your mood," said Chad Wilsey, chief scientist and vice president at 爆料公社. Each participant or group counts birds for any length of time (but for at least 15 minutes) and enters the birds they could identify at each site they visited, whether that be from home, at a...