The swallows are back!
Following up on last years posts of July 12 and Aug 14, the barn swallows are back from vacation, just in time for the black flies ;-). We remove the windows from our unused buildings to provide nesting habitat. We're going to add more nesting platforms and see what the active nest density could be. Currently there are three in 15sq ft, in a 600 sq ft room.
If they eat 850 insects a day, and we have 15 nesting pairs that have 2 broods of 4 ......that's ...let's see....carry the five ...24,480,000 insects. And think of the manure!
I had read that they do not vocalize in their overwintering grounds (as far south as Argentina). This may explain their non stop chatter - catching up on holiday stories;-)
Listed as "threatened" in 2012, nesting habitat and insecticide use are contributing factors.