. Bird lore . graphing a Robin 41 possible only by means of a boat. A tripod camera would, underthe circumstances, be useless, nor could one focus a camera held inthe hands, then insert a plate-holder, draw the slide and make theexposure, for the reason that the rapid motion of the geese andpursuing boat requires constant adjustment of focus. A wide-angle, short focus or set focus, snap-shot camera wouldgive too small and too distorted an image to be desirable, while anattempt to guess at the distance in focusing the long focus lensrequired for bird photography would result in failure ninety-n
. Bird lore . graphing a Robin 41 possible only by means of a boat. A tripod camera would, underthe circumstances, be useless, nor could one focus a camera held inthe hands, then insert a plate-holder, draw the slide and make theexposure, for the reason that the rapid motion of the geese andpursuing boat requires constant adjustment of focus. A wide-angle, short focus or set focus, snap-shot camera wouldgive too small and too distorted an image to be desirable, while anattempt to guess at the distance in focusing the long focus lensrequired for bird photography would result in failure ninety-ninetimes out of a hundred. But with this mirror camera the focus was easily obtained withthe lo-inch Swift lens employed, and the moment the birds appearedsharp on the ground glass the lever was pressed down, mirrorthrown up, curtain released, and exposure made, all in the samefraction of a second. Photographing a Robin BY A. L. PRINCEHORN. Glen Island. N. Y. lustrated by pliotographs from nature by the author. I N THE latter part ofApril. 1898, I noticeda Robin carrying strawsto the sill of a window ofthe Museum building ofGlen Island, but, as thewind blew the straw awayalmost as fast as it wasdeposited, she was some-what puzzled, and tried thenext window, with the sameresult. That evening, with theobject of helping her, Inailed a narrow strip ofwood to the edge of thesill which had the most straws deposited upon it, and the fol-lowing day she resumed work, apparently appreciating the help Ihad given her, and adopted that window for her nesting-site. Thework now progressed rapidly, and in a few days the nest was com-pleted. ROKIN FEEDINC; YOUNG 42 Bird - Lore
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