Cassiobury Park - 29.6.11

The first bird of note of the day was the first returning Black-Headed Gull that flew over the tennis courts. The Mistle Thrushes had dropped to 2 birds and a non avian highlight was 2 Silver-Washed Frtillaries, 1 in the council yard feeding on nettle flowers and another that flew West over the sports area. Only my 2nd and 3rd record of this species anywhere!