I would recommend any birders who have at some point considered Moth trapping but have not yet taken the plunge to view the following item, part of the BBC series 'Natures Top 40' hosted by Chris Packham:
http://www.bbc.co.uk/iplayer/episode/b00fy3yk/b00fxzx4/Natures_Top_40_Episode_2/
This is the best item on the subject of Moth trapping that I have seen on TV, and starts c1 min into the programme.
Back to the birds, the 1stw Iceland Gull roosted again at Fishmoor Res, but against the recent pattern it flew directly onto the roof where it was seen briefly and did not pre-roost on Fishmoor first.