Saturday, 14 April 2012

Interesting hybrid causes confusion for the unwary...

The following bird was seen at Rainton Meadows DWT in Durham yesterday (13th April) and was put out as a Yellow-legged Gull, it was noticed however that the bird didn't look quite right and had a few things wrong with it. The Distribution of black on primaries is wrong for Lesser black-backed Gull and would also be exceptional for pure Yellow-legged Gull. The upperparts tone doesn't look right for Yellow-legged Gull and is more like that of a paler Lesser black-backed Gull. The orbital ring is not as bright as should be for Yellow-legged Gull and is closer to Lesser black-backed Gull. Therefore it was concluded this bird is in fact a Herring x Lesser black-backed Gull hybrid. Thanks to Mark Newsome for comments that were used in this blog post.

Pictures of bird HERE, also see an additional photograph of the same bird below:

(Lesser black-backed x Herring Gull hybrid - © Derek Charlton)

Friday, 13 April 2012

Herring x Glaucous Gull Hybrid - Preston, Lancashire - April 2012

Here are some shots of a hybrid Herring x Glaucous Gull (Viking Gull) which is currently in Preston Lancashire, this is not an uncommon hybrid but its interesting to see nice close up shots of one, allowing for a study of the birds odd plumage.

 (Viking Gull - © Jonathan Scragg)

(Viking Gull - © Jonathan Scragg)

Interesting bird indeed.