Dora wrote:

>> I guess at that time in the morning the light is such that the
>> windows
>> act as mirrors. The bird is probably trying to drive off a rival but
>> it takes him 20 or more thumps to get the point or perhaps knock
>> himself even stupider.....BIRD BRAIN!

> Yes, we had a low IQ male cardinal who used to do the same thing -
> attacking his rival in the window, morning after morning.

Here it was a male blackbird, he too went on for a score times, and it
lasted for a week and some more
--
ViLco
Let the liquor do the thinking