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Nov.,1911 DUCKS OF THE BARR LAKE REGION, COLORADO 189 Fig. 60. BULL-SNAKE ROBBING PINTAIL'S NEST I
,:' '?' '- t?-f' ? 2"' .,
Fig. 61. NESTING SITE AND NEST OF REDHEAD
Nov.,1911 DUCKS OF THE BARR LAKE REGION, COLORADO 189 Fig. 60. BULL-SNAKE ROBBING PINTAIL'S NEST I
,:' '?' '- t?-f' ? 2"' .,
Fig. 61. NESTING SITE AND NEST OF REDHEAD
