Both parents simultaneously delivering Gunnel to chicks in the burrow; the chicks continue to vocalize after the parents leave the burrow (also simultaneously).

Habitat: rocky tidal beach, tall bluffs, mixed forest on bluffs. Weather: Sunny, warm (about 16 degrees C), calm water, no wind. Behavior: Adult PIGU flying into burrow from water at low tide, feeding 2 chicks within the burrow, then exiting the burrow, with chicks calling after the parents depart. Only a light Noise Reduction applied to the recording; no shortening between intervals.

High pass filter used to reduce distant traffic noise, and light noise reduction also used. No shortening between intervals.

Habitat: rocky tidal shoreline, sheer bluff with mixed forest above. All PIGUs recorded were in the water nearshore. Behavior: mostly resting in a loose flock on the water, occasionally flying or chasing each other. Weather: sunny, calm, relatively warm.

habitat: near short on puget sound on an island. birds 20-50 ft out into the water from a beach with a sheer 50ft tall bluff. Gulls can also be heard pretty loudly in recording, unsure of species.

bird-seen:yes

playback-used:no

Chicks calling in burrow after both parents just finished simultaneously delivering Gunnel to the chicks. This is an isolated clip from XC822129 with only the chicks calling, no adults.

Habitat: rocky tidal beach, tall bluffs, mixed forest on bluffs. Weather: Sunny, warm (about 16 degrees C), calm water, no wind. Behavior: Two chicks calling from within their burrow after their parents both depart (after feeding both chicks a Gunnel). Light Noise Reduction and High Pass Filter applied to the recording; no shortening between intervals.

Long recording at an active breeding colony while a small flock of crows was present directly below the colony's burrows. Many call types represented. Intermittent levels of high pass filter used to reduce distant traffic noise, and light noise reduction also used. No shortening between intervals.

Habitat: rocky tidal shoreline, sheer bluff with mixed forest above. All PIGUs recorded were in the water nearshore. Behavior: mostly resting in a loose flock, occasionally flying or chasing each other. Weather: sunny, calm, relatively warm.

Other species: Mostly American Crows, as I wanted to record the PIGU's vocal interactions when the crows were present. A few distant species also observed, including the ones listed as well as gull sp.'s.

Alarm/scream calls from PIGUs on the water nearshore as American Crows arrive. High pass filter used to reduce distant traffic noise. No shortening between intervals.

Habitat: rocky tidal shoreline, sheer bluff with mixed forest above. All PIGUs recorded were in the water nearshore. Behavior: Highly alert at crows as they approach directly between the PIGUs and their active burrows. The PIGUs did not swim away farther from shore, however. They stayed close and settled down after a while. Weather: sunny, calm, relatively warm.

Light noise reduction and high pass filter used to reduce distant traffic noise. No shortening between intervals.

Habitat: rocky tidal shoreline, sheer bluff with mixed forest above. All PIGUs recorded were in the water nearshore. Behavior: Adult PIGUs using scream calls after a close flyby of 1 or 2 other PIGUs. Weather: sunny, calm, relatively warm.

bird-seen:yes

playback-used:no

Rocky coast, small cove. 57 degrees F, high cloud cover. Approximately 30 birds around this cove (not many along adjacent areas north or south). Birds calling in flight, on rocks, and on bluff face. Birds flying back and forth, and some out to sea. They landed in a variety of locations: on the rocky areas over the ocean, in the ocean within the cove, on the bluff face, and one pair went into nest cavity in bluff face. A few days before this recording, I attempted to locate these birds in the late afternoon in this location without success. Complex song (seet series): 0:01.7 . Songs with similar pattern: 3:41.6 , 3:48.1 , 4:26.8 , 6:50.1 , 9:31.3 . Song with series of pseeps, and a whistle: 1:49.4 . Call 1— Pseep: 5:12.2 , 6:07.2 , 10:03.6 , series of sweeps 6:37.5 . Call 2 —over slurred burry whistle: 1:44.2 , 6:44.4 . Call 3 — seer, down slurred burry whistle: 10:30.8 , 10:37.8 , 11:27.9 . Recording was 34 minutes long: I edited out the long quiet portions to shorten it, used high pas filter and noise reduction. (Sennheiser ME62 omni mic, 24 inch Roché parabola, Marantz PMD 661).

bird-seen:yes

playback-used:no

Light noise reduction and high pass filter used to reduce distant traffic noise. No shortening between intervals.

Habitat: rocky tidal shoreline, sheer bluff with mixed forest above. All PIGUs recorded were in the water nearshore. Behavior: Adult PIGUs at rest on the water nearshore in a loose flock at active breeding colony. Sometimes would fly and chase each other, but mostly resting and calling. Weather: sunny, calm, relatively warm.