"O" stands for . . . . . . .

O S P R E Y
. . . . and they have cost me a small fortune in lenses to get a decent capture of one in flight.
The late afternoon sun and the angle of the bird was helpful here.
Comments please:

. . . . and they have cost me a small fortune in lenses to get a decent capture of one in flight.
The late afternoon sun and the angle of the bird was helpful here.
Comments please:
