How to Speak Catbird The Gray Catbird is a small bird about the size of a Robin What makes their songs so interesting is that because they are in a group of mimicking birds, their songs can be a different collection of sounds every time, even from different species Using two sets of vocal chords, male catbirds show off their skills to impress the ladies Their territorial alarm call is how they got their name If you hear a catbird making this call near you, you may be near their nest Catbird song