Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16922
Identifying sex and age of akiapolaau Identifying sex and age of akiapolaau
Methods for identifying the sex and age of the Akiapolaau (Hemignathus munroi), an endangered honeycreeper found only on the island of Hawaii, were developed by examination and measurement of 73 museum specimens and 24 live birds captured in mist nests. Akiapolaau probably undergo a single annual molt, with most birds molting between February and July. The mottled juvenal plumage is...
Authors
T.K. Pratt, S.G. Fancy, C.K. Harada, G.D. Lindsey, J.D. Jacobi
The ninety-fourth Christmas Bird Count: OC MD Ocean City, MD The ninety-fourth Christmas Bird Count: OC MD Ocean City, MD
No abstract available.
Authors
C.S. Robbins
Population trends of woodland birds from the North American Breeding Bird Survey Population trends of woodland birds from the North American Breeding Bird Survey
Population trends of woodland birds were summarized from BBS data over 1966-1991, 1966-1979, and 1982-1991. For the entire woodland bird assemblage, increasing species outnumbered decreasing species in all regions except central North America during 1966-1991. However, the proportion of decreasing species increased in most regions during the 19821991 interval. This population trend was...
Authors
B.G. Peterjohn, J.R. Sauer
Regular and homeward travel speeds of arctic wolves Regular and homeward travel speeds of arctic wolves
Single wolves (Canis lupus arctos), a pair, and a pack of five habituated to the investigator on an all-terrain vehicle were followed on Ellesmere Island, Northwest Territories, Canada, during summer. Their mean travel speed was measured on barren ground at 8.7 km/h during regular travel and 10.0 km/h when returning to a den.
Authors
L.D. Mech
A single deer stands-off three wolves A single deer stands-off three wolves
The first record of a deer (Odocoileus virginianus) standing off three wolves (Canis lupus) is documented by an aerial observation in northeastern Minnesota.
Authors
Michael E. Nelson, L. David Mech
In my experience: Improved capture techniques for psittacines In my experience: Improved capture techniques for psittacines
Four methods for capturing psittacines were developed and tested in Puerto Rico from 1991-1993. Elevated mist nets at canopy height in scrub-forest or mangrove habitat captured fewer nontarget birds and possibly more parakeets than mist nets at ground level. Playback of conspecific calls may have attracted parakeets to the net area and reduced the need to erect more than six 12-m long...
Authors
J.M. Meyers
The howling: Dealing with the wolf boom The howling: Dealing with the wolf boom
No abstract available.
Authors
L.D. Mech
Leg bands cause injuries to parakeets and parrots Leg bands cause injuries to parakeets and parrots
No abstract available.
Authors
J.M. Meyers
Old-growth forests and the Puerto Rican parrot Old-growth forests and the Puerto Rican parrot
No abstract available.
Authors
J.M. Meyers
Habitat use by an endangered riverine fish and implications for species protection Habitat use by an endangered riverine fish and implications for species protection
We investigated habitat specificity of the amber darter (Percina antesella Williams & Etnier 1977), an imperiled fish from restricted portions of 2 rivers in the southeastern United States. Foraging amber darters occupied a narrow range of riffle habitat, consistently avoiding areas 20 cm deep and with velocity 10 cm. s-1 near the substrate, occupying areas with cobble or gravel...
Authors
C.S. Robbins
Use of geoelectrical methods in groundwater pollution surveys in a coastal environment Use of geoelectrical methods in groundwater pollution surveys in a coastal environment
The pollution of coastal aquifers by old landfills can contaminate valuable and scarce water resources in the freshwater lens utilized seasonably by overcrowded communities. The pollutants will ultimately flow into the sea where they may also cause a coastal water pollution problem. We have detected pollution in the freshwater lens from a sanitary landfill near Provincetown, Cape Cod...
Authors
R.K. Frohlich, D.W. Urish, J. Fuller, M. O’Reilly