What appears to be a worn juvenile House Martin was at Fair Isle on 29th May. It’s an interesting bird. I can’t find any documentation of a bird looking like this in May. I can’t rule out an odd hybrid but seems to be a standard juv House Martin. With it being very worn, it may be a bird from last year with retained juvenile feathers, battered by migrating. I can’t find any info about breeding times in Spain etc like the juv Swallow a few weeks previously.
It turned up with a House Martin and a couple of Swallows. It appeared to be a similar size to a Sand Martin but this could be due to the worn wind and tail feathers. It had a greyish wash to the rump. It had dusky vents and sides to the belly. It had a dusky throat/face too. Asian House Martin can be ruled out due to the face/head pattern.
If anyone knows of any similar looking birds or thoughts on the bird it would be great to hear them.
Thanks to Craig Round for the photos.