. Birds: the elements of ornithology . The Secretary-bird ( Gypogeranus serpeatwrius). account of a peculiar growth of feathers hanging from the backof the head in such a way as to recall the appearance of pensplaced behind a mans ear. Owls, unlike Vultures, are found in the coldest as well as inthe warmest climes, and in the remotest Oceanic islands. Thereare a hundred and fifty-one species of Owls,whereof the Barn Owl{Strix jiammea) may serve as a type. It is the form best known tomost of us, though it is really a tropical form, inhabiting, as it does, K I30 ELEMENTS OP OENITHOLOGY. the warm
. Birds: the elements of ornithology . The Secretary-bird ( Gypogeranus serpeatwrius). account of a peculiar growth of feathers hanging from the backof the head in such a way as to recall the appearance of pensplaced behind a mans ear. Owls, unlike Vultures, are found in the coldest as well as inthe warmest climes, and in the remotest Oceanic islands. Thereare a hundred and fifty-one species of Owls,whereof the Barn Owl{Strix jiammea) may serve as a type. It is the form best known tomost of us, though it is really a tropical form, inhabiting, as it does, K I30 ELEMENTS OP OENITHOLOGY. the warmest parts of both hemispheres and only ascending somedistance northward in the mild climate of Western Europe,The hooting cry of the Wood or Tawny Owl (Symium dlueo) isfamiliar, no doubt, to most of our readers who dwell near any well-wooded parts of the country. The Great Homed Eagle-owl Fig. The JSagle-owl (Bubo ignavus). (Bubo ignavm), which has often been taken in this country, andthe smallest of British Owls (Scops giu), must not be passed bywithout any reference, as they are good examples of Jthe mostnumerous section of the entire group of Owls. INTEODUCTION. 13! Before proceeding to consider the structure of Birds, it maybe well first to cast a backward glance over the route we havecome, and to once more take stock of the principal forms towhich the readers attention has been called, as being so manyspecimens of different groups of Birds. Our object, as before said, has been to afford some help tothe investigation and memory of the beginner in his attempt toobtain a mental grasp of the whole Class of Birds. For thispurpose we have spoken of great groups arranged in a roughand ready, or popular, manner, as Scratchers or GallinaceousBirds, as Cooers, as Swimmers or Natatory Birds, as Waders or Grrallatorial Birds, and as Eunners or CursorialBirds. Amongst the many form
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