Ringing of black-headed gull Chroicocephalus ridibundus (Linnaeus, 1766) (Laridae) nestling. Сertified ornithologist, research fellow of The I.I. Schmalhausen Institute of Zoology of National Academy of Sciences of Ukraine is installing the ring of the leg of the nestling. Birds’ ringing is widely used to track the migration pathways and other ecological features of the species. Locality: Kaniv water reserve, Kyiv region, Tripillya environs, Ukraine.
<a href="//commons.wikimedia.org/wiki/User:Yuliya_Krasylenko" title="User:Yuliya Krasylenko">Yuliya Krasylenko</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>