Black-capped and Carolina Chickadees | The Taylor Lab | University of Colorado Boulder
Listening in Nature: Hybrid Chickadees: music from the contact zone
Chickadee Song | Free Sound Effects | Animal Sounds
Black-capped Chickadee Facts, Pictures, and Song - Owlcation
Black-capped Chickadee - eBird
RockyNPS on Twitter: "2 kinds of Chickadees live in #RMNP. How to tell a Mountain Chickadee from a Black-capped Chickadee? Besides their song, which is raspier than a Black-capped Chickadee, Mountain Chickadees
Bird Sounds and Songs of the Black-capped Chickadee | The Old Farmer's Almanac