Saturday, 5 November 2011

Thrybergh Country Park - 5th November 2011

This morning's ringing session took me to Thrybergh Country Park in Rotherham. We arrived at 7am, got 3 nets up around the hide and caught 26 birds.

First bird in today was a Dunnock, which turned out to be a retrap, which meant I could read it's number and get my initials in the book. It also gave me an opportunity to learn the difference between a retrap and a control. Basically, a retrap is when a bird originally rung by the group is recaught, whereas a control is where a bird rung by other ringers is recaught. It turned out that this particular bird had been caught at Thrybergh last November when it was aged as a 3, or juvenile and was therefore just over a year old.

The next few rounds saw a few more Dunnocks, which allowed me to age them as juveniles using the obvious black tips on the primary covets as seen in the picture below.

Juvenile Dunnock

As well as the Dunnocks we also had the first of 6 Blackbirds, which included a mixture of adult, juvenile , male and female birds. Other birds caught today were: Greenfinch (2 super males), Chaffinch (1 female), Tree Sparrow (3), Wren (1), Great Tit (3) and Blue Tit (3, includinga retrap from last year).

Other birds seen or heard on site were: Mistle Thrush, Redwing, Mallard, Coot, Moorhen, Mute Swan, Cormorant, Canada Goose (c200), Black-headed Gull and Pied Wagtail.

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