Life histories of north american jays crows and titmice

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Excerpt from Life Histories of North American Jays, Crows, and Titmice: Order Passeriformes
This is the fifteenth in a series of bulletins of the United States National Museum on the life histories of North American birds.
The same general plan has been followed, as explained in previous bulletins, and the same sources of information have been utilized. The nomenclature of the 1931 check-list of the American Ornithologists' Union and supplements has been followed.
An attempt has been made to give as full a life history as possible of the best-known subspecies of each species and to avoid duplication by writing briefly of the others and giving only the characters of the subspecies, its range, and any habits peculiar to it. In many cases certain habits, probably common to the species as a whole, have been recorded for only one subspecies. Such habits are mentioned under the subspecies on which the observations were made. The distribution gives the range of the species as a whole, with only rough outlines of the ranges of the subspecies, which in many cases cannot be accurately defined.
The egg dates are the condensed results of a mass of records taken from the data in a large number of the best egg collections in the country, as well as from contributed field notes and from a few published sources. They indicate the dates on which eggs have been actually found in various parts of the country, showing the earliest and latest dates and the limits between which half the dates fall, indicating the height of the season.
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Oorspronkelijke releasedatum: 02 augustus 2018

Aantal pagina's: 580

Hoofdauteur: Arthur Cleveland Bent

Hoofduitgeverij: Forgotten Books

Product breedte: 152 mm

Product hoogte: 30 mm

Product lengte: 229 mm

Verpakking breedte: 152 mm

Verpakking hoogte: 30 mm

Verpakking lengte: 229 mm

Verpakkingsgewicht: 0.77 kg

EAN: 9781331307426

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