Goldcrests and Green Woodpecker at Wraysbury

 We had a productive ringing session for autumn migrants last weekend, processing 97 birds (5 recaptures and 92 newly ringed). Most notably, we ringed 41 Chiffchaffs, which are passing through South in decent numbers at this time of year. 

We also ringed 4 Goldcrests (a.k.a. Europe's smallest bird!). They were all young birds that had fledged this year, 3 males and 1 female. These were most likely local birds, however some Scandinavian Goldcrests do migrate to the UK to overwinter here.

Goldcrest (Age 3J, female)

The recaptures included a young female Green Woodpecker, which had been ringed at the end of July. This individual could now be sexed as female due to there being no trace of red in its black submoustachial stripe.

Green Woodpecker (Age 3, female)

  

Age 3 criterion: diagnostic white-tipped tertials

Sex F: black moustachial stripe with no trace of red

Great Spotted Woodpeckers

These three juvenile Great Spotted Woodpeckers - a male and two females, found their way into the net at Wraysbury yesterday. Most likely they are siblings from the same brood this year.

 

Spotted Flycatcher at Wraysbury

Spotted Flycatcher has become a rare passage migrant through our area, with a bird ringed at Wraysbury this month being the first encountered here since 2003.

This individual hatched this year, retaining all its white/pale-tipped juvenile greater-coverts apart from the inner-most one that has been replaced.. 

Lesser Whitethroat juv/adult tail feathers

A juvenile Lesser Whitethroat ringed in early August had opportunistically replaced its right outer tail-feathers while retaining all its juvenile feathers on the left-side.

The photo provides a good example of the differences between juvenile and adult tail-feathers in this species.

Right: T6-T5=adult; T4 missing; T3 growing; T2-T1=juvenile

Left: All 6 are retained juvenile tail feathers 

 

Lesser Whitethroat (Age3J)

Contact

Runnymede Ringing Group operates from Maidenhead in the north to Chobham in the south covering parts of Berkshire, Middlesex and Surrey.

We use ringing to monitor bird populations contributing to conservation projects through the BTO.

 

Training for Barn Owl nest monitoring and ringing is also available in the Marlow area.

 
Please send any queries to runnymederinginggroup@gmail.com.

House Sparrow, 2024