Up on the tower again as part of the Tower 42 Bird Study Group. Total sightings included 1 Red Kite, 2-3 Common Buzzard (pic 3), 2 Sparrowhawk and several Peregrines (pic 1). Perhaps most surprising sighting was a Painted Lady butterly, fluttering around the top at 600ft- very early!
We are attempting to co-ordinate the sightings of migrating birds between Beddington Farmlands and central London. Johnny, positioned at the farmlands, reported very little in the way of visible migration from that position.
Links on the Tower 42 Bird Study Group: http://peteralfreybirdingnotebook.blogspot.com/2010/04/extreme-urban-birding.html