The Slimbridge pheasants may have been daft, but how about this opposite example of bird intelligence. We hang old fatty meat bones on string from our washing line so that the gulls can't get them. The strings are about 18ins long.
On one occasion a crow marched its way sideways along the line until it was positioned above the bone, looked at it sideways several times as if assessing the situation, reached down as far as it could and grabbed the string in its beak, pulled the bone up a bit, stood on the string it had just pulled in, then reached down again. It repeated this action several times until it had 'wound in' the sting and could then grab the bone.
If that's not showing logic and reasoning, what is?