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A Study Of The Spotted Tinamous And The Pale Spotted Tinamous Of Argentina

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A Study Of The Spotted Tinamous And The Pale Spotted Tinamous Of Argentina

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Author : Gardiner Bump
language : en
Publisher:
Release Date : 1969

A Study Of The Spotted Tinamous And The Pale Spotted Tinamous Of Argentina written by Gardiner Bump and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Birds categories.

Tinamous are the principal upland game birds of South America. The spotted tinamou group Nothura is the most widely distributed and abundant of the tinamous resident in Argentina. It inhabits short grasslands, often rather intensively grazed and utilized but is not dependent upon adjacent cultivation. Various species appear to a climatically adaptable to the southern and southwestern United States. This study presents in detail the characteristics, habitat and climatic requirements, life history, and propagation of the several species and subspecies of spotted and pale spotted tinamous as a means of evaluating the desirability of and potential for a successful trial introduction in the United States.

Mourning Dove Status Report 1967

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Author :
language : en
Publisher:
Release Date : 1968

Mourning Dove Status Report 1967 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Bird populations categories.

Nationwide dove population indexes presented in the 1967 Mourning Dove Status Report were obtained by essentially the same data gathering and analyzing procedures as in 1966. A refinement was made in the base year index, using the mean of the 1966 and 1967 readings as the base for all States. There was a slight adjustment in physiologic region boundaries. Data analyses suggest that the 1967 dove populations declined to approximately the 1965 level in all units. Present population indexes in all units are below the 10-year (1957-1966) mean. Long-term trends in population densities indicate that dove breeding populations in all units are considerably below the peak of 1960 and, with the exception of the Eastern Management Unite, are at their lowest level since 1957.