3,800-Myr granitic gneiss in south-western Minnesota
S. S. Goldich, C. E. Hedge
1974, Nature (252) 467-468
WE have previously arrived at an age of 3,550 Myr for granitic1 gneiss in the vicinities of Morton and Montevideo in the Minnesota River valley, south-western Minnesota. We now report new Rb–Sr analyses (Table 1) and an age of 3,800 Myr for the fine grained foliated phase...
Ophiolites and oceanic crust
E.M. Moores, E.D. Jackson
1974, Nature (250) 136-139
OPHIOLITES consist of a pseudostratiform sequence, of harzburgite, tectonite, ultramafic and mafic cumulates sometimes including gabbro and quartz diorite (plagiogranite) intrusions, dolerite dyke swarms, pillow lava 1, and deep-sea sediments2-4. This assemblage occurs in all Phanerozoic mountain systems and is interpreted as fossil oceanic crust and uppermost mantle5-10. Outstanding problems...
Measurement in a marine environment using low cost sensors of temperature and dissolved oxygen
F.A. Godshall, R. L. Cory, D.E. Phinney
1974, Chesapeake Science (15) 178-181
Continuous records of physical parameters of the marine environment are difficult as well as expensive to obtain. This paper describes preliminary results of an investigative program with the purpose of developing low cost time integrating measurement and averaging devices for water temperature and dissolved oxygen.Measurements were made in an estuarine...
Monitoring mourning dove production via wing surveys in southeastern Pennsylvania
L.S. Hoffman, D.E. Sheffer, J.S. Lindzey
1974, Proceedings Northeast Fish and Wildlife Conference (31) 217-230
[Book review] Kentucky Birds. A Finding Guide, by Roger W. Barbour, et al
C.S. Robbins
1974, The Quarterly Review of Biology (49) 83-84
Observations on the terrestrial wing displays of breeding Willets
M.A. Howe
1974, The Wilson Bulletin (86) 286-288
[Book review] Las Aves de Puerto Rico, by V. Biaggi
C. B. Kepler
1974, Ibis (116) 237-238
Enzyme changes in mallard ducks fed iron or lead shot
R.S. Rozman, L. N. Locke, S.F. McClure
1974, Avian Diseases (18) 435-445
No abstract available....
Capture-recapture analysis of a wintering black-capped chickadee population in Connecticut, 1958-1993
C.S. Robbins
1974, American Birds (28) 273-274
We investigated the dynamics of a wintering population of Black-capped Chickadees (Parus atricapillus) using data from a long-term capture-recapture study. Goodness-of-fit and likelihood-ratio tests indicated that the standard Jolly-Seber model was inadequate for the data, so we explored different parameterizations of a model in which survival probability for new captures...
Increased mortality of Cooper's hawks accustomed to man
Hollice A. Snyder, N.F.R. Snyder
1974, Condor (76) 215-216
No abstract available....
The seventy-fourth Christmas bird count. 320. Back Bay National Wildlife Refuge, Va
P. Sykes Jr.
1974, American Birds (28) 278-279
The seventy-fourth Christmas bird count. 333. Little Creek, Va
P. Sykes Jr.
1974, American Birds (28) 284-285
Twenty-seventh winter bird-population study. 11. Hickory-oak-ash floodplain forest
C.S. Robbins
1974, American Birds (28) 700-701
The season--October, November, December, 1973
C.S. Robbins
1974, Maryland Birdlife (30) 37-46
Looking out for the canvasback. Canvasback--King of the bay. Part IV
Matthew C. Perry
1974, Ducks Unlimited (38) 21-22,
Can the Cooper's hawk survive?
N.F.R. Snyder, Hollice A. Snyder
1974, National Geographic (145) 433-442
Electrophoresis as a management tool
R.P. Morgan II, J.A. Chapman, L.A. Noe, Charles J. Henny
1974, Transactions of the Northeast Fish and Wildlife Conference (31) 63-71
The theme of this 1974 Northeast Fish and Wildlife Conference is 'A New Era'. Indeed, it is a new era for improved techniques to assist in management of our fish and wildlife resources for the maximum benefit of all. In some cases, the new techniques are primarily used...
Subspecific identification of song sparrows collected at Raleigh, N.C.,in summer of 1967
P.W. Sykes Jr., R.C. Laybourne
1974, Chat (38) 77
The Eastern timber wolf
L.D. Mech
1974, American Forests (80) 46-47
A new profile for the wolf
L.D. Mech
1974, Natural History (83) 26-31
Additional information on the red crossbill breeding in the lower piedmont region of North Carolina in 1967
P.W. Sykes Jr.
1974, Chat (38) 42-43
Everglade kites feed on nonsnail prey
P.W. Sykes Jr., H.W. Kale II
1974, The Auk (91) 818-820
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...
Canis lupus
L.D. Mech
1974, Mammalian Species (37) 1-6
No abstract available. ...
California condor specimens in collections
S.R. Wilbur
1974, The Wilson Bulletin (86) 71-72
Future of the condor: Recovery or extinction?:
S.R. Wilbur
1974, Field Museum of Natural History Bulletin (45) 3-6