If birds left tracks in the sky, what would they look like ... so must a pattern form in the wake of a flying bird. But of course birds in flight leave no trace—at least none visible to the ...

Off in the distances I can hear the familiar scream-like call of a blue jay. The sound pierces through the yellow and orange autumn maple leaves on a crisp blue sky day. I sit enjoying the sunshine, ...

That's the way one scientist puts it — referring to how infected wild birds survive long enough to spread it to birds and ...

Off in the distances I can hear the familiar scream-like call of a blue jay. The sound pierces ... themselves off into the dark night sky. Often times they fly over the top of my house, landing ...