I have been noticing the odd small group of house martins over the months but they appear much more frequently now.
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Not as high flying as the swift, house martins resemble swallows without the tail fork. Like swallows they make a mud nest and I think the ones we see locally nest on the farm buildings to the North of us. Swifts, house martins and swallows are quite similar, but as you can see from the drawing below there are distiguishing features.
The house martin and swallow are most alike. The main difference is the swallows forked tail. The swift is quite different with its wide sickle-shaped wings.
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