Maybe the gulls that wintered in the area have already moved on and the ones that migrated south are yet to arrive? Maybe the lack of food waste going into landfill is starting to have an effect? Maybe the Common Buzzard that keeps launching low flying attacks on the gulls isn't helping?
I called in this afternoon for ten minutes and there were more gulls than I'd seen throughout March on the lagoons. Maybe I should stop trying to second guess whats going on. Anyway there was a couple of Yellow-legged Gulls amongst the Herring and Lesser Black-backed Gulls, which may be a result of a bit of northward migration. Both the Yellow-legged Gulls were youngsters, so I guess they followed the Lesser Black-backed Gulls north?
|Second Calendar-Year Yellow-legged Gull|