What Hortica said .......
Wet birds' ability to fly efficiently is limited by the weight of the water that gets trapped in their plumage, which is why birds are much more willing to frequent BBs in the immediate vicinity of good protective cover just a couple of wing beats away.
I have popular BBs, one just below the lowest branches of a black pine and the other nestled tight to a 20' tall arborvitae hedge.
Al
