The follow up from Steve to the post below ;-
Midland Island on 30th May
2nd earliest date ever after 26th May 2010 and almost a month earlier than in 1995 though most sessions have been 6th to 15th June.
One of the poorest seasons with only 3 nests with broods of three chicks.
62 chicks ringed from 32 nests - success rate of 1.94
Chicks too small 4 nests with 22.214.171.124 chicks
Empty 3 nests - 1 fledged, 2 failed
Not accessible 3 nests - 2,2,3 chicks (possibly one more not visible)
Eggs 4 nests - 1,2,2,3 - mostly newly laid and probably replacement clutches - unlikely to succeed.
Total nests 46.