|
Ornithologist, Ivan Miksik, from the Bird Ringing Centre of the Czech National Museum, holds a gull as he rings it, on the bank of the Vltava river on January 19, 2016 in Prague, Czech Republic. Capturing birds for ringing occurs mostly in winter as gulls tend to spend their winters in city centres where they find food and warmth. Ornithologists are working to gain information into why the numbers of gulls are in decline. (Photo by Matej Divizna/Getty Images)
|
