At 6-days old I take measurements of nestling White-crowned sparrows (Zonotrichia leucophrys). Each nestling is affixed with a small metal band around its leg, this band has a unique ID number so if it is ever caught anywhere in the world, we’ll know exactly where it is from.

[Photo and caption by Carly Hawkins]

Carly studies how bird songs influence mating strategies in white-crowned sparrows. She is interested in how traffic noise can impede the ability to assess bird songs and subsequently affects reproductive success. For more about Carly’s research, check out her other Field Frames, here and here!

[Edited by Karli Chudeau]