. The bird book. Birds. 78 STRUCTriiE AND COMPARTSON. those that lie alonc^ the ii})per arm-bone are the tertiaries, or scapulars, as they are sometimes called, that is, shoulder feathers. The primaries are always either nine or ten in number, and never vary in birds of the same family; they are also unevenly webbed and often have the broader web sheared. HG FEDCB A Fig. 16. Diagram of Technical Terms. A Primaries. B Secondaries. C Primary Coverts. I) Greater Coverts. E Tertiaries. F Throat. G Chin. H Bill. / Front. J Crown. K Lesser Coverts. L Interscapular region. 31 Leg (tarsus). N Abdomen.
. The bird book. Birds. 78 STRUCTriiE AND COMPARTSON. those that lie alonc^ the ii})per arm-bone are the tertiaries, or scapulars, as they are sometimes called, that is, shoulder feathers. The primaries are always either nine or ten in number, and never vary in birds of the same family; they are also unevenly webbed and often have the broader web sheared. HG FEDCB A Fig. 16. Diagram of Technical Terms. A Primaries. B Secondaries. C Primary Coverts. I) Greater Coverts. E Tertiaries. F Throat. G Chin. H Bill. / Front. J Crown. K Lesser Coverts. L Interscapular region. 31 Leg (tarsus). N Abdomen. 0 Kump. P Upper tail coverts. Q Under tail coverts. away toward the tip, making emarginateprimaries. The second- aries vary much in number, are evenly webbed or nearly so, are never emarginate, and differ from the primaries in one other important respect, — they are movable. With the bird's wing in our hand we should notice one other. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Eckstorm, Fannie Hardy, 1865-1946. Boston, Heath
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirds, bookyear1901
