Program Information — Series 1 & 2
Click on a program in the right-hand column to see a description and program notes.

Mobbing Calls

Mobbing calls ask for help in repelling a predator. The black-capped chickadee adds more and more "dee" syllables to its chick-a-dee-dee call to indicate a more and more urgent threat. The call brings other chickadees and even other species to "get in the face" of a perched predator, like an owl.

The house wren mobbing calls and the black-capped chickadee's calls are from the CD accompanying the Handbook of Bird Biology, published by the Cornell Laboratory of Ornithology. Chris Tenney recorded the bushtit and mixed flock alarm calls at Elkhorn Slough.

Series 1
Vocal Range
Importance of Song
Avoiding Monotony
Learning Song
Hip Hop Mimicry
Hummingbird Complexity
Syrinx Anatomy
Internal Duets (Cardinal)
Internal Duets (Cowbird)
Internal Duets (Thrushes)
Syrinx & Pan Pipes

Series 2
Songs & Calls
Call Repertoires
Alarm Calls
Mobbing Calls
Call Notes
Cross-Species Alarms
Lungs & Air Sacs
Circular Breathing