...in 1906 and in 1912 obtained his doctorate for research in ornithology... 
John Albert Leach 「An Australian Bird Book」
...They are acharacteristic feature of Indian ornithology, for they are foundeverywhere in that country...
John Albert Leach 「An Australian Bird Book」
...American Ornithology...
Frank M. Chapman 「Color Key to North American Birds」
...The introduction, of 233 pages, treats of general ornithology and the anatomyof birds...
Frank M. Chapman 「Color Key to North American Birds」
...Notes on the Ornithology of Labrador...
Frank M. Chapman 「Color Key to North American Birds」
...Economic Ornithology [= Biological Survey]...
Frank M. Chapman 「Color Key to North American Birds」
...A Contributionto the Ornithology of Minnesota...
Frank M. Chapman 「Color Key to North American Birds」
...Further Notes on the Ornithology of the Lower Rio Grandeof Texas, from observations made during the spring of 1878...
Frank M. Chapman 「Color Key to North American Birds」
...I refrain from doing sobecause a reader unacquainted with Indian ornithology would, ifconfronted by such a list, find it difficult to identify the commonbirds...
Douglas Dewar 「Birds of the Indian Hills」
...My own experience as a dabbler in botany and ornithology hasconvinced me that the pursuit of such researches is not at all out ofthe spirit of the familiar line...
Bradford Torrey 「The Foot-path Way」
...I see this book was begun eight years ago;—then intended to contain only four Oxford lectures: but the said lectures also 'intended' to contain the cream of forty volumes of scientific ornithology...
John Ruskin 「Love's Meinie」
...Our venerable companion, who had the ornithology of America, if I may use the expression, at his fingers’ ends, imparted many curious details of the habits of these rare birds...
Mayne Reid 「The Hunters' Feast」
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