Interesting Swallow in the Netherlands (1 Viewer)

At about 07:30 (CET) today I watched a Barn Swallow fly north over the River Lek near Vianen in the Netherlands. It was strikingly chestnut red underneath from throat back to tail. This would appear to be an example of either of the two Middle Eastern sub-species savignii or transitiva. Not having experience of either I wouldn't like to opt for one or the other. But I would welcome any thoughts on this apparent occurence - to what extent do either of these turn up in Europe?

A few "ordinary" Swallows were passing through around the same time although they were all headed east. A significant number of newly-arrived Whitethroats were in the area as was a Common Redstart and a few Northern Wheatears. The weather recently has been dominated by high pressure with clear skies, warm temperatures and light south-easterly winds.

Grateful for any thoughts and comments.

David

I am sure Dutch twitchers know more than I do (or have more to say ).

These birds are thought to be aberrant European swallows, and there is apparently no certain way to identify a vagrant North African race in the field.

Thanks - that's helpful and I did wonder if that might be the case. As far as your comments about Dutch twitchers are concerned; "You may say that, I couldn't possibly comment"!

David

this may be of interest, though sounds like your bird was much darker than Dominic's

http://www.birdingetc.com/2011/04/rufous-on-wight.html?spref=fb

Thanks - yes mine was darker than that example. Interestingly I subsequently found this thread that provides a good deal more information: http://www.birdforum.net/showthread.php?t=34498&highlight=swallow

David