Charles J. Henny
I am a Scientist Emeritus at the USGS Forest and Rangeland Ecosystem Science Center.
My research focuses on field studies of raptors and fish-eating birds, particularly Ospreys. I am interested in the unique situations and characteristics that make particular species vulnerable to contaminant threats. In my spare time I enjoy collecting bird books.
Education and Certifications
Ph.D., Wildlife Ecology, Oregon State University, Corvallis, OR (1970)
M.S., Wildlife Ecology (1967)
B.S., Fisheries & Wildlife (1965)
Science and Products
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Filter Total Items: 213
Response of breeding birds to aerial sprays of trichlorfon (Dylox) and carbaryl (Sevin-4-Oil) in Montana forests Response of breeding birds to aerial sprays of trichlorfon (Dylox) and carbaryl (Sevin-4-Oil) in Montana forests
Breeding density, food, nesting success, and mortality of 20 bird species were monitored at Beaverhead National Forest, Montana, in 1975 in conjunction with experimental applications of trichlorfon (Dylox) and carbaryl (Sevin-4-oil) to western budworms (Choristoneura occidentalis). Bird species on nine 350- to 550-ha forested plots (three controls and three treated with each pesticide)...
Authors
L.R. DeWeese, Charles J. Henny, R.L. Floyd, K.A. Bobal, A.W. Schultz
Effects of sevin-4-oil, dimilin, and orthene on forest birds in northeastern Oregon Effects of sevin-4-oil, dimilin, and orthene on forest birds in northeastern Oregon
The possible harmful effect of insecticides on nontarget organisms should be a prominent concern in all attempts to control forest pests. Although all wildlife must be considered, birds are particularly vulnerable. The study reported here was part of the effort to find an environmentally safe method to control one of the major sources of insect damage to forest trees - the Douglas-fir...
Authors
M.L. Richmond, Charles J. Henny, R.L. Floyd, R.W. Mannan, D.M. Finch, L.R. DeWeese
Brain cholinesterase activities of passerine birds in forests sprayed with cholinesterase inhibiting insecticides Brain cholinesterase activities of passerine birds in forests sprayed with cholinesterase inhibiting insecticides
Brain cholinesterase activities were determined in passerines collected from northwestern forests that had been sprayed with trichlorfon, acephate, and carbaryl at 0.56, 1.13 and 2.26 kg/ha. Trichlorfon and carbaryl inhibited cholinesterase activity slightly in only a few birds, primarily canopy dwellers. In contrast, acephate caused marked inhibition of cholinesterase activity in nearly...
Authors
J.G. Zinkl, Charles J. Henny, P.J. Shea
Osprey distribution, abundance, and status in western North America: III. The Baja California and Gulf of California population Osprey distribution, abundance, and status in western North America: III. The Baja California and Gulf of California population
An estimated 810 ± 55 pairs (minimum estimate) of ospreys (Pandion haliaetus) were nesting in the study area during our survey (24 March-1 April 1977). Approximately 174 pairs nested along the Pacific side of Baja California, 255 pairs along the gulf side, 187 pairs on the Midriff Islands, and 194 pairs in coastal Sonora and Sinaloa. Most nested on cliffs adjacent to the sea (59%); some...
Authors
Charles J. Henny, D. W. Anderson
Organochlorine and mercury residues in Swainson's hawk eggs from the Pacific Northwest Organochlorine and mercury residues in Swainson's hawk eggs from the Pacific Northwest
Many raptorial species in the Pacific Northwest have not been studied from the viewpoint of pollutant contamination. The Swainson's Hawk (Buteo swainsoni) is particularly interesting because of its highly migratory characteristic; it apparently winters primarily in Argentina (Brown and Amadon 1968, Houston 1968). White and Cade (1977) and others have suggested Central America and South...
Authors
Charles J. Henny, T. E. Kaiser
Bald eagles nesting in Baja California Bald eagles nesting in Baja California
Published records of Bald Eagles (Haliaeetus leucocephalus) nesting in Baja California during the last 50 years are nonexistent to our knowledge, and few records exist prior to that time. Friedmann et al. (1950:61, Pac. Coast Avifauna 29) describe the distribution of Bald Eagles in Baja California as "a scattering of pairs on both the Pacific and Gulf Sides." Nesting Bald Eagles were...
Authors
Charles J. Henny, Daniel W. Anderson, C.E. Knoder
Non-USGS Publications**
Henny, C.J., Wight, H.M., 1969, An endangered osprey population- Estimates of mortality and production: Auk, v. 86, p. 188-198.
Henny, C.J., 1969, Geographical variation in mortality rates and production requirements of the Barn Owl (Tyto alba ssp.): Bird-Banding, v. 40, no. 4, p. 277-290.
Chapman, J.A., Henny, C.J., Wight, H.M., 1969, The status, population dynamics, and harvest of the dusky Canada goose: Wildlife Monographs, no. 18, p. 1-48.
Chapman, J.A., Henny, C.J., 1968, Records of surf scoters found inland in Oregon: Murrelet, v. 49, no. 1, p. 11.
Henny, C.J., 1967, Estimating band-reporting rates from banding and crippling loss data: Journal of Wildlife Management, v. 31, no. 3, p. 533-538.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Filter Total Items: 213
Response of breeding birds to aerial sprays of trichlorfon (Dylox) and carbaryl (Sevin-4-Oil) in Montana forests Response of breeding birds to aerial sprays of trichlorfon (Dylox) and carbaryl (Sevin-4-Oil) in Montana forests
Breeding density, food, nesting success, and mortality of 20 bird species were monitored at Beaverhead National Forest, Montana, in 1975 in conjunction with experimental applications of trichlorfon (Dylox) and carbaryl (Sevin-4-oil) to western budworms (Choristoneura occidentalis). Bird species on nine 350- to 550-ha forested plots (three controls and three treated with each pesticide)...
Authors
L.R. DeWeese, Charles J. Henny, R.L. Floyd, K.A. Bobal, A.W. Schultz
Effects of sevin-4-oil, dimilin, and orthene on forest birds in northeastern Oregon Effects of sevin-4-oil, dimilin, and orthene on forest birds in northeastern Oregon
The possible harmful effect of insecticides on nontarget organisms should be a prominent concern in all attempts to control forest pests. Although all wildlife must be considered, birds are particularly vulnerable. The study reported here was part of the effort to find an environmentally safe method to control one of the major sources of insect damage to forest trees - the Douglas-fir...
Authors
M.L. Richmond, Charles J. Henny, R.L. Floyd, R.W. Mannan, D.M. Finch, L.R. DeWeese
Brain cholinesterase activities of passerine birds in forests sprayed with cholinesterase inhibiting insecticides Brain cholinesterase activities of passerine birds in forests sprayed with cholinesterase inhibiting insecticides
Brain cholinesterase activities were determined in passerines collected from northwestern forests that had been sprayed with trichlorfon, acephate, and carbaryl at 0.56, 1.13 and 2.26 kg/ha. Trichlorfon and carbaryl inhibited cholinesterase activity slightly in only a few birds, primarily canopy dwellers. In contrast, acephate caused marked inhibition of cholinesterase activity in nearly...
Authors
J.G. Zinkl, Charles J. Henny, P.J. Shea
Osprey distribution, abundance, and status in western North America: III. The Baja California and Gulf of California population Osprey distribution, abundance, and status in western North America: III. The Baja California and Gulf of California population
An estimated 810 ± 55 pairs (minimum estimate) of ospreys (Pandion haliaetus) were nesting in the study area during our survey (24 March-1 April 1977). Approximately 174 pairs nested along the Pacific side of Baja California, 255 pairs along the gulf side, 187 pairs on the Midriff Islands, and 194 pairs in coastal Sonora and Sinaloa. Most nested on cliffs adjacent to the sea (59%); some...
Authors
Charles J. Henny, D. W. Anderson
Organochlorine and mercury residues in Swainson's hawk eggs from the Pacific Northwest Organochlorine and mercury residues in Swainson's hawk eggs from the Pacific Northwest
Many raptorial species in the Pacific Northwest have not been studied from the viewpoint of pollutant contamination. The Swainson's Hawk (Buteo swainsoni) is particularly interesting because of its highly migratory characteristic; it apparently winters primarily in Argentina (Brown and Amadon 1968, Houston 1968). White and Cade (1977) and others have suggested Central America and South...
Authors
Charles J. Henny, T. E. Kaiser
Bald eagles nesting in Baja California Bald eagles nesting in Baja California
Published records of Bald Eagles (Haliaeetus leucocephalus) nesting in Baja California during the last 50 years are nonexistent to our knowledge, and few records exist prior to that time. Friedmann et al. (1950:61, Pac. Coast Avifauna 29) describe the distribution of Bald Eagles in Baja California as "a scattering of pairs on both the Pacific and Gulf Sides." Nesting Bald Eagles were...
Authors
Charles J. Henny, Daniel W. Anderson, C.E. Knoder
Non-USGS Publications**
Henny, C.J., Wight, H.M., 1969, An endangered osprey population- Estimates of mortality and production: Auk, v. 86, p. 188-198.
Henny, C.J., 1969, Geographical variation in mortality rates and production requirements of the Barn Owl (Tyto alba ssp.): Bird-Banding, v. 40, no. 4, p. 277-290.
Chapman, J.A., Henny, C.J., Wight, H.M., 1969, The status, population dynamics, and harvest of the dusky Canada goose: Wildlife Monographs, no. 18, p. 1-48.
Chapman, J.A., Henny, C.J., 1968, Records of surf scoters found inland in Oregon: Murrelet, v. 49, no. 1, p. 11.
Henny, C.J., 1967, Estimating band-reporting rates from banding and crippling loss data: Journal of Wildlife Management, v. 31, no. 3, p. 533-538.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.