. Bird-life : a guide to the study of our common birds . 32 FORM AND HABIT: THE BILL. corolla. In the Tootli-billed Hummer {Androdoii) botlimandibles are finely serrate at the end, the npper onebenig also hooked, and the bird feeds on insects which itcaptures on the surface of leaves and other places. Among the Woodhewers {Dendrocolaptida^ of SouthAmerica there is fully as much variability, which reflects equally variable feedinghabits. Some species haveshort, stout, straight bills,others exceedingly long,slender, curved , Gannets, An-hingas, and other birdsthat catch fish by pu

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. Bird-life : a guide to the study of our common birds . 32 FORM AND HABIT: THE BILL. corolla. In the Tootli-billed Hummer {Androdoii) botlimandibles are finely serrate at the end, the npper onebenig also hooked, and the bird feeds on insects which itcaptures on the surface of leaves and other places. Among the Woodhewers {Dendrocolaptida^ of SouthAmerica there is fully as much variability, which reflects equally variable feedinghabits. Some species haveshort, stout, straight bills,others exceedingly long,slender, curved , Gannets, An-hingas, and other birdsthat catch fish by pursuing them under water, havesharply serrate mandibles, which aid them in holdingtheir slippery prey. Some shore birds {Limicolm) use the bill as a probe,. Fig. 18.—Serrate bill of Merfranser, bird, i^/j natural size.)

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirdsun, bookyear1901