Tuesday, 29 December 2009

Roudsea Woods - behind the hut 29/12/2009

Present: JAF, ES, Josh Blanchard Lewis

38 birds processed, 5 new (Great Tit 4; Blue Tit 1); 33 local retraps.

Roudsea Woods and Mosses National Nature Reserve
The diagonal scar running through the wood is a line of power cables

Emily extracts a BlueTit

Josh processes R295207, a colour-ringed Marsh Tit from the very first cohort, ringed on 23 December 2002 (7 years almost to the day) and is the oldest known bird in the wood!


lorenzothellama said...

Is the bird Josh is holding the one we saw the other day?

Jim said...

Yes, it was!

Anonymous said...

Nice one, Jim. Our oldest marti in Monks Wood got to 8 yrs to the month (we still have a pair that will both be 7 next May if they make it through the winter, and a couple that are 6+), and one at my new stomping ground in Oxfordshire made it to 9yrs. Plenty in Monks Wood get to 5+.

Monks Wood adult survival rates seem a little lower than yours, but basically similar at 0.41-0.70 (mean of 0.52 over the same years as yours)