Monday, 28 September 2020

Bird ringing under Covid-19 - July 2020

A busier month with 167 new birds of 21 species. Reed Warbler and Blackcap led the field with 30 each with Chiffchaff third at 20.

Some sightings of colour-ringed Common Terns were received including three young from this year.

Being able to identify a bird's hatching year is very useful for measuring the productivity of a species (and species on a specific site). Below, are examples of criteria we use for Sedge Warbler and Whitethroat.

Sedge Warbler
compare primary wear between two ages (youngest: left; adult: right)

Whitethroat
compare eye colour between two ages (youngest: left; adult: right)

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