Robert Barnwell Roosevelt,
The Game-Birds of the Coasts and Lakes of the Northern States of America
“ A bird, to be credited as killed, must be retrieved within the bounds—that is to say, must be gathered with the hands alone; and it was formerly permitted to take him not only on the ground or in the air, but from a tree, and the shooter might walk round a running bird and drive him towards the trap; but more modern rules require that the bird shall fall, and shall be proceeded to straight from the score. The bounds are eighty yards radius from the centre of the traps in single-bird shooting, and one hundred yards in double-bird shooting. ”
