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The Bird Study Book

出版	Independently Published, 2021-09-09
主題	Nature / General
ISBN	9798547797385
URL	http://books.google.com.hk/books?id=Cr-szgEACAAJ&hl=&source=gbs_api

註釋Book Excerpt: e kind of food they consume. A very serviceable glass may be secured at a price varying from five to ten dollars. The National Association of Audubon Societies, New York City, sells a popular one for five dollars. If you choose a more expensive, high-powered binocular, it will be found of greater advantage when watching birds at a distance, as on a lake or at the seashore. Notebooks.--The bird student should early acquire the custom of making notes on such subjects as are of special interest. In listening to the song or call of some unknown bird, the notes can usually be written down in characters of human speech so that they may be recalled later with sufficient accuracy to identify the singer. It is well to keep a list of the species observed when on a trip. For many years in my field excursions I have kept careful lists of the birds seen and identified, and have found these notes to be of subsequent use and pleasure. In college and summer-school work I {10} have always insisted on pupils cu Read More