Thursday, 14 January 2010

The worst may be over?

Further to the Fieldfare catches, it's good to know that the average weights of Chris's birds was close to 100 grams (although the sample size was small). Compare that with Portland where birds evidently forced out by cold weather averaged 96.3g on the 7th January and 92.4g on the 8th. BWP indicates that exhausted, moribund and birds killed by cold weather weigh in the 50's to low 60's so if the worst is over, birds that have managed to hold their own should now survive.
I was pleasantly surprised earlier today to hear and then see two Goldcrest in a small ivy clad clump who were there before the snow and I feared had succumbed but must have been able to feed and get some protection from excessive heat loss.

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