I've been doing about 30 miles on the motorway (US freeway) every working day for nearly 30 years, and, I've got used to seeing the hawks and kestrels hovering over the road in the hope of some easy food. The ratio of different kinds of bird has gradually changed quite a lot over the time for example we now see a lot more red kites. But just over the last few months I've noticed a lot of birds of prey sitting on the top of the light supports. Seems fairly logical, why bother to hover if you can just sit there.
Did I just not notice them before, or, have they started changing their behaviour.
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