Very large flock of migrating Common Nighthawks

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If you enlarge the pic above (just click on it) there are more than 60 Common Nighthawks in that one photo. All in all this flock of migrating Common Nighthawks totaled at least 75 and more likely 100 birds--absolutely the most nighthawks I have ever seen at one time.
Click on this second pic also to see identifiable nighthawks. When I first spotted this flock they looked like a river of birds in the sky and I thought it must be a flock of gulls as I have seen similar flocks flying kind of in a line that were gulls-and I couldn't imagine it was a flock of nighthawks, a species that has been in decline and that I have seen in smaller numbers here year after year.
Though they generally headed down the Arkansas River corridor, smaller groups of them would fly around the area as they foraged. I think the most I have seen before migrating through here was around 12 in 2014 (they flew lower so got better pics).   This was just an amazing spectacle. SeEtta

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