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Variation of Birds in a State of Nature by Frank Russell, 1892

Variation of Birds in a State of Nature by Frank Russell, 1892, Page 21

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19 all [illegible] occur. In nearly every case the sides are unsymmetrical, the [illegible] angle is often wanting. The [markings?] of the [median?] area vary in a marked degree, those of the surface and edges of the cheek patch vary in number, size and position. These was found on many Table [illegible] No. [illegible] No. Aver. Var. % Length 21 56 480 31.5 21 69 Extent 45 246 75.5 482 60.25 30.5 59* Wing 13.5 50 21.5 279 17.5 8. 51* Tail 4.1 - 6.6 473 535 2.5 46* Tarsus 2.4 - 4.2 - 3.3 1.8 54* M. Toe 1.7 - 4.3 - 3. 2.6 86* H. Toe 4 - 1.1 - 7.5 .7 93* L. Cul 1.2 - 2.6 480 1.9 1.4 73* W. Cul .7 - 1.3 480 1. .6 60 It will be serve that the variation is [illegible] than in other sp. studied. The weight varies from three pounds to [illegible] and a half the wing does not [lengthen?] accordingly, in fact is [illegible] keeps pace with the least variable part measured. The dotted diagrams show a tendency toward [retardation?] in all the parts the curve is regular and symmetrical and [illegible] to the large no reliable. The [illegible] of the width of culmen is noticeable. The coming goose will probably have a shorter leg. Tje diagram to illustrate the correlation of
 
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