Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16783
Body weights of newly hatched Anatidae
As early as 1928 (E.C. Meyers, Auk, 45: 334-388, 1928) investigators realized the importance of bird weights and appealed to ornithologists to record and publish records of these. Practically all of the weights of waterfowl that have been published, however, have been of adults or grown young (see F.H. Kortright, The ducks, geese and swans of North America, Amer. Wildl. Inst., 1943, pp. 381-388; F
Authors
M.G. Smart
Development and maturation of primary feathers of redhead ducklings
A comparison of the maturation rates of the primaries of redheads (Aythya americana) hatched very early with those hatched very late was made in the 1961 season. Primaries of the early-hatched birds emerged when the birds were 36-38 days old, those of the late-hatched birds when they were 7-10 days younger. This difference was also found in the age at first flight and the age at eventual maturatio
Authors
M.G. Smart
Tidal dispersal of herbicides to control Erasian watermilfoil in the Chesapeake Bay
No abstract available.
Authors
J.H. Steenis, Vernon D. Stotts
A method of approximating range size of small mammals
In summary, trap success trends appear to provide a useful approximation to range size of easily trapped small mammals such as Peromyscus. The scale of measurement can be adjusted as desired. Further explorations of the usefulness of the plan should be made and modifications possibly developed before adoption.
Authors
L. F. Stickel
Is Cnephia invenusta (Walker) a possible important vector of Leucocytozoon in Canada geese?
No abstract available.
Authors
I.B. Tarshis, C. M. Herman
Natal plumage characters in rails
The downy young of the Clapper Rail (Rallus longirostris), King Rail (Rallus elegans), and Virginia Rail (Rallus limicola) are described as totally black in all literature examined by us. Wetherbee (Bird-Banding, 32: 141-159, 1961) noted that some neonates of Virginia Rail from Storrs, Connecticut, had patches of white down below the wings. "Neonatal" pertains to the developmental condition or c
Authors
D.K. Wetherbee, B. Meanley
A method for estimating fall adult sex ratios from production and survival data
This paper presents a method of utilizing data relating to the production and survival of a bird population to estimate a basic fall adult sex ratio. This basic adult sex ratio is an average value derived from average production and survival rates. It is an estimate of the average sex ratio about which the fall adult ratios will fluctuate according to annual variations in production and survival.
Authors
H. M. Wight, R.G. Heath, A. D. Geis