Outlines of a Natural Arrangement of the Falconidae
The book Outlines of a Natural Arrangement of the Falconidae was written by author Ridgway, Robert, 1850-1929 Here you can read free online of Outlines of a Natural Arrangement of the Falconidae book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Outlines of a Natural Arrangement of the Falconidae a good or bad book?
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— Dorsal portion of the spinal' tract deeply divided, and each branch dilated exteriorly Faleones B.— Dorsal portion of the spinal tract enlarged on all sides, undivided, and sparsely feathered. a.— Eyelids with distinct lashes ; lumbar tract present ; dorsal por- tion of the spinal tract sparsely feathered to the caudal pit, thence diminished and continued as a narrow band along the caudal vertebras to the oil-gland Herpetotheres. 1). — Eyelids without distinct lashes ; lumbar tract absent'; d...orsal por- tion of the spinal tract in the form of an elongated ellipse, only contracted into a band immediately in front of the oil- gland (but even there still broad), consisting exclusively of scattered feathers, which become stronger posteriorly. Micrastures. The only close relationship between any two groups of this subfamily is seen in the generalized forms of the Faleones and Polybori {Hieracidea and Milvago), whose specialized forms (Falco and Polyborus) are so ex- tremely dissimilar in appearance.
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