Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16783
Effects of DDT on birds at the Patuxent Wildlife Research Refuge
The spraying of DDT at the rate of 2 pounds per acre on a tract of land within the well-drained bottomland forest at the Patuxent Research Refuge on June 5, 1945, had little or no effect on the bird population of the area, with the possible exception of the redstart (Setophaga ruticilla). Considerable evidence was accumulated showing that this species was probably somewhat reduced. The effective
Authors
R. E. Stewart, J.B. Cope, C.S. Robbins, J.W. Brainerd
Field studies of a Peromyscus population in an area treated with DDT
No abstract available.
Authors
L. F. Stickel
Effects of DDT spray on eggs and nestlings of birds
Thirty-four nests of 11 species of birds containing eggs, and 38 nests of 12 species containing young of various ages, were used to determine the effect of applying DDT spray. Seventeen of the nests containing eggs and 19 of those containing young were left unsprayed as checks. The spray consisted of 1 pound of DDT to 2 pints of xylene diluted in fuel oil to make 1gallon, and was applied by a hand
Authors
R.T. Mitchell
Alternative methods in upland gamebird food analysis
No abstract available.
Authors
A. C. Martin, R.H. Gensch, C.P. Brown
Germination of seeds of some wild and cultivated plants after 5 1/2 years of storage
No abstract available.
Authors
R. B. Nestler
The mechanical value of grit for bobwhite quail
An investigation on the need of grit as a grinding agent in the digestive processes of bobwhite quail was conducted with 1,372 pen-raised birds at the Patuxent Research Refuge, Bowie, Maryland. Some of the stock was reared, maintained through winter, and bred without access to any grit, although the diet after the tenth week consisted of whole seeds......As to survival, weight, and efficiency of f
Authors
R. B. Nestler
The potential value of islands for controlled field studies with upland game birds
No abstract available.
Authors
R. B. Nestler
Propagated quail versus wild quail as studied under laboratory conditions
No abstract available.
Authors
R. B. Nestler, J.R. Langenbach
Milk by-products in the diet of bobwhite quail chicks
No abstract available.
Authors
R. B. Nestler, L. M. Llewellyn