. [Articoli su uccelli da National Geographic Magazine]. Gli uccelli. La caccia con un microfono 709. "Camp ephilus" è stato chiamato in onore del ivorybill per raggiungere il nido, che fu di sette miglia da un migliorato strada in una foresta 30 miglia e lungo 18 miglia di larghezza, il partjf dovuto trasferire tutte le attrezzature di una fattoria carro trainato da quattro muli. Il carro è diventato il laboratorio del suono e il camp è stato battezzato con il nome generico di l'uccello cercato (pagina 706). mantenendo il loro dal territorio scelto. Il coccodrillo di Bull si trova in corrispondenza della superficie dell'acqua, il gonfiaggio del grande sacche d'aria sui lati

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. [Articles about birds from National geographic magazine]. Birds. HUNTING WITH A MICROPHONE 709. "camp ephilus" was named in honor of the ivorybill To get to the nest, which was seven miles from an improved road in a forest 30 miles long and 18 miles wide, the partjf had to transfer all equipment to a farm wagon hauled by four mules. The wagon became the sound laboratory and the camp was christened with the generic name of the bird sought (page 706). keeping them from the chosen territory. The bull alligator lies at the surface of the water, inflating the large air sacs on the sides of his neck. He then submerges his ponderous body, while the armored head and tail protrude menacingly. Thereupon he emits his thunder while the heavy plates on his back seem to vibrate and cause the water above to dance and shoot spray into the air (page 710). It was now the last of April and another message from Davison started us westward, though we were loath to leave our genial host and his marvelous bird sanctuary. When we reached western Oklahoma a dull fog gradually obscured the landscape, and as the wind whipped over the barren fields and swirled across the road, we real- ized that we were in the midst of a real "Panhandle" dust storm. Furthermore, the storm continued with- out much abatement for seven of the eight days that we spent on the Davison Ranch near Arnett. It had scarcely rained for three years and from fields that had once been plowed the surface soil and the very seed was blown into neighboring counties. The Davison Ranch itself, however, is largely covered with tiny oaks which the natives call "shinnery." Here in the dust- covered shinnery we were to study the lesser prairie chickens, photograph their curious courtship antics, and record their gobbling calls. The cattle eyed us curiously when we first erected one of our observation blinds near the home of a burrowing owl. This blind was made of artificial grass mats, greener than anyt

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