It has come to our attention that there are some watchers who haven’t seen the comparison between Beauty and https://t.co/H0bjgKTPiV before. So…their bands are https://t.co/H0bjgKTPiV – black band 13/Y. Beauty-black /green 81/Y…and a picture! pic.twitter.com/06Dqry4Mpy

— Rfalconcam (@Rfalconcam) May 4, 2019

This comparison of Dot.ca and Beauty at their nest in Rochester, NY shows that male and female peregrine falcons are very different sizes. The male is 1/3 smaller than the female.

You can’t tell them apart by color but you can tell them apart by size if they stand near each other. Here’s a second comparison:

Here’s a great comparison shot of our Rochester Falcons. Dot. ca (left) Beauty (right). #ROC #peregrine DC is 1/3 smaller than Beauty. pic.twitter.com/gUGYRzRtjL

— Rfalconcam (@Rfalconcam) May 20, 2019

If you watch the peregrines every day on camera you’ll eventually notice that their faces are different. This takes a lot of practice!

(embedded tweets from @Rfalconcam)