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Shroud of imagination
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Slide Scan - Geary St, San Francisco, front of building - circa 1980s
 
The other day I heard a raucous cawing and when I looked out at the deck, a crow was sitting on it and cawing at the swallows which were dive-bombing him. It was fascinating! There were about four swallows and they were all moving quickly, darting in-and-out, swooping around and returning to continue pestering the crow. I grabbed the trusty RX10 and tried to get a shot but my timing wasn't quick enough and my settings weren't quite right, either. It was fun anyway! In this shot you can kind of see one of the swallows, though......

Swallow Dive-Bombing Crow.jpeg
 
The other day I heard a raucous cawing and when I looked out at the deck, a crow was sitting on it and cawing at the swallows which were dive-bombing him. It was fascinating! There were about four swallows and they were all moving quickly, darting in-and-out, swooping around and returning to continue pestering the crow. I grabbed the trusty RX10 and tried to get a shot but my timing wasn't quick enough and my settings weren't quite right, either. It was fun anyway! In this shot you can kind of see one of the swallows, though......

View attachment 1809189
Crows are extremely intelligent, will make tools to solve a problem.
 
Yes, after a while this guy timed it just right so that when there was no swallow all that close he quickly took flight and headed off away from them. I wonder why they were pestering him in the first place! They really can be obnoxious with that dive-bombing.
My guess is that the crow was hunting either their nest or there are fledglings about to leave the nest. There are a lot of young birds out there, and the adults get quite protective of the territory where their young will be taking their first steps. I've seen a chickadee and a robin run squirrels off, and I mean chase them across the ground and up into another tree. Since fledglings don't fly particularly well, it appears the adults chase off unwelcome guests prior to the young leaving the nest, making it safer for them to earn their wings. I've seen similar behavior with blue jays taking turns buzzing a hawk to get him to move on.
 
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