Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16786
Industrial strength herons: The Black-crowns of Baltimore
The largest night-heron colony in Maryland is located at the foot of the Key Bridge in Dundalk, Maryland, in an industrial area. Foraging herons were followed from the colony during May-July, . Most birds followed landed near industrial/urban sites. Availability of perches and lights (at night) may serve to enhance the heron's prey capture success.
Authors
R.M. Erwin, V.P. Anders, K. Miles-Iverson
Lead and cadmium concentrations in mink from northern Idaho
The purposes of this study were to determine concentrations of cadmium and lead in mink (Mustela vison) in northern Idaho, to discuss potential effects, and to determine whether levels have declined. Mink (skinned carcasses) from the Coeur d'Alene River system (northern Idaho) were ohtained from trappers during the 1981-82 (n = 17) and 1986-87 (n= 14) seasons. Livers of all eight mink from the unc
Authors
L. J. Blus, C. J. Henny
Feeding activities of black skimmers in Guyana
Discrepancies appear in the literature concerning the influence of time of day and tide on feeding activities of Black Skimmers (Rhynchops niger). Observations from Guyana, South America, suggest that skimmers do feed during the day, but are strongly cued to receding tides.
Authors
R.M. Erwin
Minimizing capture-related stress on white-tailed deer with a capture collar
We compared the effect of 3 capture methods for white-tailed deer (Odocoileus virginianus) on blood indicators of acute excitement and stress from 1 February to 20 April 1989. Eleven adult females were captured by Clover trap or cannon net between 1 February and 9 April 1989 in northeastern Minnesota [USA]. These deer were fitted with radio-controlled capture collars, and 9 deer were recaptured 7-
Authors
G. D. DelGiudice, K. E. Kunkel, L. D. Mech, U. S. Seal
Summer-fall survival of American woodcock in Maine
We estimated summer-fall survival for 32 adult and 96 fledged young American woodcock radiotagged in eastern Maine during 1982-84 using single-interval, multiple-interval, and nonparametric methods
Authors
E.L. Derleth, G.F. Sepik
An evaluation of the Christmas Bird Count for monitoring population trends of selected species
No abstract available.
Authors
G.S. Butcher, M.R. Fuller, L.S. McAllister, P.H. Geissler
Raptor road surveys in South America
Twenty-six (23 traveling and three point) raptor roadside surveys were conducted during a 29,000 km expedition through nine nations of South America. During roadside surveys, we tallied 41 of the 87 (47%) diurnal raptor species (including vultures) that occur in South America. The number of species observed per route varied from 17 in the wet savanna of Venezuela to only two species recorded in th
Authors
D. H. Ellis, R.L. Glinski, D.G. Smith
Effects of winter undernutrition on body composition and physiological profiles of white-tailed deer
We examined the effects of undernutrition and recovery on body composition and blood and urinary profiles of 6 captive white-tailed deer (Odocoileus virginianus) between 18 December 1984 and 3 May 1985. Deer were weighed, and blood and urine were collected every 2 weeks from 10 January to 3 May. At Weeks 2, 8, and 14, body composition was estimated by the dilution of tritiated water technique and
Authors
G. D. DelGiudice, L. D. Mech, U. S. Seal
Physiology/nonspecific biomarkers
No abstract available.
Authors
F.L. Mayer, L. Folmar, R. Graney, D. McCume, M. McKee, B. Rattner, D. Versteeg
Effects of experimental overgrowth on survival and change in the turf assemblage of a giant kelp forest
Crustose coralline algae were the prevalent cover among sessile organisms that paved or grew near the substratum, and also the most commonly overgrown species in a giant kelp Macrocystis pyrifera (L.) C.A. Agardh forest located off San Nicolas Island, California. Giant kelp was the largest and most conspicuous species that overgrew large patches of the substrata; overgrowth among turf organisms a
Authors
A.K. Miles, E.C. Meslow
The ninetieth Christmas Bird Count: SD MD Southern Dorchester County, MD
No abstract available.
Authors
C.S. Robbins
The ninetieth Christmas Bird Count: OC MD Ocean City, MD
No abstract available.
Authors
C.S. Robbins