Given that the ringing at our three main sites tends to be reasonably consistent from year to year our catches of many species should give an idea of productivity for those species which we catch in reasonable numbers.
With all returns now in all the indications are that 2010 was a good breeding season for most of our warblers. Below I list the numbers of new birds ringed this year compared with the average catch over the past three year which are shown in brackets.
Willow Warbler 570 (330)
Chiffchaff 219 (140)
Reed Warbler 648 (700)
Sedge Warbler 369 (310)
Grasshopper W 27 (14)
Whitethroat 93 (45)
Lesser White. 53 (25)
Blackcap 80 (79)
Catches of many of our residents also suggest good productivity especially Blue, Coal, and Long-tailed tits and Goldfinch.
John
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