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

Call Notes

We can distinguish many call notes because we share with birds pretty much the same hearing range. But birds can hear sounds 20 times shorter than we can distinguish. We slow down some call notes to approximate what birds can hear.

Chris Tenney recorded the call of the western wood-pewee in the Los Padres National Forest. He recorded the call of the pacific-slope flycatcher in the Gabilan mountains, the call of the brown creeper in the central Sierra Nevada, and the sounds of the bushtit and mixed flock alarm calls at Elkhorn Slough. I slowed the individual calls 16 time (dropping the pitch 4 octaves) using Bias Peak.

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