"We've gone from this concept of dead birds don't fly to this new virus that seems to be a bit more like dead bird flying," ...

Flocks of birds wheeling, swooping and gliding in unison, as if choreographed, are a wonderful sight. The benefit to members of the flock are many ... Be attracted to flying or swimming with ...

"We've gone from this concept of dead birds don't fly to this new virus that seems to be a bit more like dead bird flying," explains ... moving from one flock to the next without burning itself ...