. Birds: the elements of ornithology . The Hoatzin (Opisthocomus cristatus). are absent from the New World. There are twenty-four speciesin the family. An allied form from Madagascar, called theCyrombo {Leptosoma discolor), has a similar tumbling habit anda peculiar condition of the nostrils. That very familiar Bird the House-martin {CheUdon urUca) 98. 95. The Satin Bower-bird {FtUomrhynohus 96 ELEMENTS OF OBNITHOLOBT. represents a group of Swallows and Martins which is spreadover the whole world, and contains about eighty-two these the Comtnoa Swallow (Sirundo ru

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. Birds: the elements of ornithology . The Hoatzin (Opisthocomus cristatus). are absent from the New World. There are twenty-four speciesin the family. An allied form from Madagascar, called theCyrombo {Leptosoma discolor), has a similar tumbling habit anda peculiar condition of the nostrils. That very familiar Bird the House-martin {CheUdon urUca) 98. 95. The Satin Bower-bird {FtUomrhynohus 96 ELEMENTS OF OBNITHOLOBT. represents a group of Swallows and Martins which is spreadover the whole world, and contains about eighty-two these the Comtnoa Swallow (Sirundo rustica) may answeras our example. Swifts greatly resemble Swallows in general appearance andin their mode of flight, though this is much more power-ful. Nevertheless, as we shall see, they are reaUy very distinctfrom them. They number about eighty-six different kinds,which range through the warm and temperate regions of the Fig. 100.

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Keywords: ., bookcentury1800, bookdecade1890, bookpubl, booksubjectornithology