Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41918
Integrated wildlife research in the Superior National Forest
No abstract available.
Authors
L. D. Mech, R.B. Brander
Studies on the riboflavin, niacin, pantothenic acid and choline requirements of young bobwhite quail
Four experiments were conducted to examine the riboflavin, niacin, pantothenic acid and choline requirements of young Bobwhite quail. Quail fed purified diets deficient in either riboflavin, niacin, pantothenic acid or choline grew poorly and high mortality occurred by 5 weeks of age. Under the conditions of these experiments, it was found that: (1) young quail require approximately 3.8 mg. ribo
Authors
J.A. Serafin
Increased mortality of Cooper's hawks accustomed to man
No abstract available.
Authors
Hollice A. Snyder, N.F.R. Snyder
Function of eye coloration in North American accipiters
Young nestling Cooper?s Hawks peck vigorously at red objects but do not peck at yellow objects. The significance of this response is discussed in relation to developmental changes in iris coloration in adult hawks.
Authors
N.F.R. Snyder, Hollice A. Snyder
Additional information on the red crossbill breeding in the lower piedmont region of North Carolina in 1967
No abstract available.
Authors
P.W. Sykes
Use of artificial nest structures by everglade kites
No abstract available.
Authors
P.W. Sykes, R. Chandler
Everglade kites feed on nonsnail prey
The Everglade Kite (Rostrhamus sociabilis plumbeus) of Florida has been called snail hawk or snail kite because it was thought to feed exclusively on the soft parts of the freshwater apple snail (Pomacea paludosa) (Nicholson 1926, Howell 1932, Bent 1937, Snyder and Snyder 1969). Furthermore, the other three subspecies of this wide-ranging Neotropical raptor (Friedmann 1950) are known to feed only
Authors
P.W. Sykes, H.W. Kale
Subspecific identification of song sparrows collected at Raleigh, N.C.,in summer of 1967
No abstract available.
Authors
P.W. Sykes, R.C. Laybourne