The weight increases some of the birds have shown recently is quite impressive - NW31951, a first winter female, weighed 62.8g on 20/04/13 but weighed 74.3g when retrapped this morning, an increase of 11.5g in 7 days or 18.3%.
NW31942, an adult female, weighed 63.3g on 19/04/13 but weighed 78.5g when retrapped this evening, an increase of 12.2 g in 8 days or 19.3%.
Apples may not be a natural food supply in spring but the data is still valuable and a good measure of their ability to put on weight. The birds are actually less dependant on the apples now and are also feeding on the emerging flowers of various trees. I have seen them feeding on Poplar flowers recently and the emerging flowers of Ash today.
I only caught 1 new and 4 retrap Waxwings today but one of the retraps was my favourite bird if you can ever have a favourite Waxwing. It was the colour-ringed bird from Aberdeen that was first seen in the garden on 18th February. This bird is a first winter female and has been recorded in the garden 32 times since then and has been caught 4 times. She hasn't shown the rapid weight increases of some birds but is making steady progress. She only weighed 49.3g on 30th March but was 63.0g when retrapped today.
NW65022 retrapped today. She was first seen on 18th February amd her details can be found by clicking here. |
Kingfisher (Alcedo atthis) 27/04/13 |
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