Chroicocephalus ridibundus; Larus argentatus
Captured on the outskirts of Gdynia along concrete sea defences, the sounds of black-headed and European herring gulls mingle with the morning activities of the harbour. The birds were feeding on the gently-sloping outer side of the defences, and I was able to climb over the main wall to place a couple of microphones close to the surface.
Mallard calls and sparrow/feral pigeon wingbeats are audible at various points.
Photo by Roland zh / CC-BY-SA-3.0 [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons. Link unavailable.