Larus californicus

field recording juvenile First-cycle bird. Vocalizations at e.g., 1:36 and 2:00. First vocalization on the recording is the alarm call as the bird took flight on my approach. I then tracked the bird with the parabola as it hunted over the channel making large circles downstream of the spillway.. . #Habitat#. Rock-lined spillway channel below a large flood control reservoir set amidst upland hardwood forests.. . #Editing#. Edited in Adobe Audition. Butterworth high-pass filter, order 3, cutoff frequency 1.5 kHz. . #Equipment#. Fostex FR-2 digital recorder with Sennheiser microphone and Telinga pro 22" parabolic reflector.; animal seen:yes; playback used:no