Avocet Ringing

EDRG has been involved with colour ringing Avocet chicks since 2011 and below is a resume of those ringed, the majority with conventional colour rings but more recently using leg flags, and their recapture history.

EDRG-ringed birds have a Yellow flag (with two digits) on the left leg above the ‘knee’ and plain yellow ring above right. Birds with colour rings have a combination of two rings on each leg, again above the ‘knee’, for identification in the field. The left leg is read first, top colour followed by bottom colour and then similarly with the right leg. For example, the Avocet chick on the top far right of the photographs would be identified as LB, OO.

From 2016 onwards, EDRG is now only using leg flags.
For the purposes of the list below, these are the codes for the colour rings used.

R = Red; B = Blue; L = Lime; O = Orange;

Click here for details of the ringed Avocet Chicks

Below is a distribution map for these birds.

Avocet distribution map

 

Robin Ward writes :

The timing of visits is evidence that the six Avocets have visited Alkborough for post-breeding moult. Avocets form post-breeding moulting flocks on favoured sites, with British breeders joining flocks both at home and across the North Sea. From late October, Avocets move to their wintering sites. The Alkborough / Reads Island area is a well-known important Avocet post breeding/moulting gathering.

Sightings later in the year conform with the known dispersal of birds to some of the well-established wintering sites at Orfordness (Suffolk), North Thames Estuary (Coalhouse Fort) and Poole Harbour, with sightings of birds returning through the Wash (e.g. Frampton Marsh) and Cambridgeshire (Ely).

The individual sighted at Marshside (Southport, Merseyside) in late March, is a good example of an immature wandering, one which probably winters in East Anglia or south of, moulting at Alkborough. Avocets generally breed when 2 or 3 years of age.

 

 

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