Date: 5/22/20 2:23 pm
From: Daniel Mason <millipede1977...>
Subject: swallow question
I'm not quire sure but, I was thinking about swallows today and where
many of them nest. Before human development, I'm kind of imagining lower
numbers of a couple swallow species. The number of cliff swallows that
nest under bridges is staggering. Are there enough cliffs around that
today's numbers could have existed? And barn swallows? Under bridges and
in many buildings all over. Where did they nest before human
development? I can't picture there being as many barn swallows if humans
weren't here. Then I wonder the impact... IF their were lower numbers of
swallows, there were likely much higher numbers of many other birds as
there'd be more habitat AND more food available.
Random thoughts.

Daniel Mason

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