. [Articles about birds from National geographic magazine]. Birds. 714 THE NATIONAL GEOGRAPHIC MAGAZINE. FRANKLIN S GULLS AND WHITE-FACED GLOSSY IBISES NEST TOGETHER These two species join forces in large colonies in the tulcs of the Bear River Marshes, Utah. Apparently they do so from force of circumstances rather than sociability, for the expedition learned, by watching from blinds, that they pass most of their time fighting. An excellent flyer, the white-faced glossy ibis (right) travels miles for a meal of crustaceans, earthworms, water insects, or frogs. Franklin's gull nests in marshes a
. [Articles about birds from National geographic magazine]. Birds. 714 THE NATIONAL GEOGRAPHIC MAGAZINE. FRANKLIN S GULLS AND WHITE-FACED GLOSSY IBISES NEST TOGETHER These two species join forces in large colonies in the tulcs of the Bear River Marshes, Utah. Apparently they do so from force of circumstances rather than sociability, for the expedition learned, by watching from blinds, that they pass most of their time fighting. An excellent flyer, the white-faced glossy ibis (right) travels miles for a meal of crustaceans, earthworms, water insects, or frogs. Franklin's gull nests in marshes and is seen on United States coasts only in winter. out of the east. In majestic circles it sailed over the canyon, looking the ground over to make sure that all was safe. From its talons dangled a large jack rabbit. Now the screams of the hungry eaglets became more and more excited as, in nar- rowing circles, the old bird dropped lower and lower. Finally, in one long graceful sweep, it disappeared below the rim of the canyon and a moment later we heard the crash of twigs as it landed on the nest. There were no cries from the old bird; silently she came and silently she left. Only the calls of the young were recorded. A more obliging creature was the dashing prairie falcon that had its eyrie on a simi- lar vertical cliff at the mouth of a canyon near Denver. Its wild screams, whenever we approached the cliff, made it easy to re- cord and the photographing was not diffi- cult.* At the bottom of the same precipice under an overhanging cliff, long ages ago the home of cliff dwellers, a little canyon wren had built its nest, and the resounding whistles of the male were clearly recorded when once we discovered his favorite song perch on a near-by rock. One of the most appealing experiences of the trip was at the home of a mountain plover in the arid prairie country east of Denver. It was one of those uncertain days when one can count a half-dozen rain- storms in different directions
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