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Old 2019-03-14, 13:28   #5
Dr Sardonicus
 
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Feb 2017
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Quote:
Originally Posted by tServo View Post
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The chimneys provide nesting sites for the birds; he slatted windows for bats.
Every Spring, a good sized extended family ( say 20-30 ) of chimney swifts arrive and take up residence in the described upper reaches of the grade school. Every Autumn, when the days get short, they leave for their southern vacation. I judge the seasons by them.\
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Their shape, the results of untold millenia of evolution, reminds me of the swept wings of the me-262 or its descendants, the mig-15 and f-86.
The dusk sky is filled with their zooming about as they feed, chirping excitedly.
Thanks to the swifts for keeping the dreaded insect hoard ( which seems to get worse every year ) down.
Thanks for the posting! I've never seen them, but I have heard about them. It sounds like they fly about as well as barn swallows.

The question arises: Where did chimney swifts nest before there were chimneys? About the only natural locales I can think of are perhaps some caves, and hollow tree stumps. Perhaps the primeval forest in North America had enough hollow stumps of significant girth (and maybe height) to support a significant population of these birds.

But, it seems, their natural nesting sites have become rarer, or perhaps chimneys became so common the population grew in response. With the decline in chimneys (at least, the kind built of masonry), there will surely be fewer places for them to nest.
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