The evening gull roosts at Tophill Low NR, East Yorkshire have failed to provide any excitement up to now. My last visit five days ago saw only 3,500-3,700 birds come in, while the evening prior to that saw less than 1,000 birds on the reservoir by dark.
However, if you don’t look you won’t see – so today I found myself overlooking D Reservoir once again. And this time my luck was in. A total of 1,052 argenteus Herring Gulls roosted, though c2,000-2,100 birds came in from the northeast between 2.50pm and 4.00pm, with half departing southwest, presumably bound for the River Humber.
Whilst scanning through the birds that had assembled on the reservoir to bathe and preen, an adult Caspian Gull Larus cachinnans was picked out at 3.35pm and remained until about 3.50pm before leaving high southwest with c200 Herring Gulls. A total of 760+ Great Black-Backs L. marinus was a respectable count in the roost, with probably 1,000-1,200 through during the final hour of daylight.
The onset of the cold weather has probably ended the moth trapping campaign, this Satellite Eupsilia transversa (below) and a single White-shouldered House-moth Endrosis sarcitrella the recent highlights.