This fall migrating mockingbirds came back to town to spend the winter.
Northern mockingbirds (Mimus polyglottos) were a southern species that now nest as far north as southern Canada. In autumn the birds move south and some decide that Pittsburgh is as far as they need to go. New arrivals immediately set up territory and warn off other mockingbirds by singing, “Mine, Mine, Mine.”
The songs are pretty, and pretty confusing because mockingbirds mimic other species. For instance, this Xeno Canto recording by Joshua Stevenson has an American robin sound at 0:11. No it’s not a robin.
When I walk around my neighborhood this month I hear 15 different songs but they come from only two locations. Two mockingbirds are “dueling” from opposite sides of Magee Field, the only birds singing in November.
Read how mockingbirds create The Voice of a Crowd in this vintage article from 2010.