Monday, 16 May 2011

A dead ringer

Not actually dead, but a close call for a drake Ring-necked Duck. This bird is a hybrid Ring-necked Duck x Tufted Duck, Dunstable Sewage Works, 15th May 2011.

On first glance it shows the sweeping grey flanks, white edged base and ring to the bill, and the high crown of a Ring-necked, but look a bit closer and thing don't start to add up
  • The 'high crown' becomes a bit of a tuft
  • the sweeping grey flanks aren't sweeping enough, and don't end with a clear white stripe towards its chest
  • The bill pattern isn't strong enough, with a very weak sub-terminal band and white basal surround
  • A green sheen to the head

There are some good comparison photos on Flickr here, on RadioactiveRobins here, on Dave Browns blog here, and on the Birdwatch Irelands website here.

No comments:

Post a Comment

Related Posts with Thumbnails