Daniel Twedt, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 93
Sample size and allocation of effort in point count sampling of birds in bottomland hardwood forests Sample size and allocation of effort in point count sampling of birds in bottomland hardwood forests
To examine sample size requirements and optimum allocation of effort in point count sampling of bottomland hardwood forests, we computed minimum sample sizes from variation recorded during 82 point counts (May 7-May 16, 1992) from three localities containing three habitat types across three regions of the Mississippi Alluvial Valley (MAV). Also, we estimated the effect of increasing the...
Authors
W.P. Smith, D.J. Twedt, R.J. Cooper, D.A. Wiedenfeld, P.B. Hamel, R.P. Ford
Yellow-headed blackbird (Xanthocephalus xanthocephalus) Yellow-headed blackbird (Xanthocephalus xanthocephalus)
No abstract available.
Authors
D.J. Twedt, R.D. Crawford
Conservation partnerships in the lower Mississippi Alluvial Valley Conservation partnerships in the lower Mississippi Alluvial Valley
No abstract available.
Authors
D.R. Loesch, D.J. Twedt, K. J. Reinecke
Warbling vireos breeding in Issaquena County, Mississippi Warbling vireos breeding in Issaquena County, Mississippi
No abstract available.
Authors
C.O. Nelms, D.J. Twedt, J. Henne-Kerr
Geographic variation in Yellow-headed Blackbirds from the northern Great Plains Geographic variation in Yellow-headed Blackbirds from the northern Great Plains
We assessed geographic variability in morphology among Yellow-headed Blackbirds (Xanthocephalus xanthocephalus) collected from breeding populations in Minnesota, North Dakota, and South Dakota in the United States and Alberta, Manitoba, and Saskatchewan in Canada during spring. Both male and female Yellow-headed Blackbirds tended to be larger in the more northern breeding populations...
Authors
Daniel J. Twedt, William J. Bleier, George M. Linz
MAPS is for the birds MAPS is for the birds
No abstract available
Authors
David L. Watts, Daniel J. Twedt, Allan J. Mueller
Science and Products
Filter Total Items: 93
Sample size and allocation of effort in point count sampling of birds in bottomland hardwood forests Sample size and allocation of effort in point count sampling of birds in bottomland hardwood forests
To examine sample size requirements and optimum allocation of effort in point count sampling of bottomland hardwood forests, we computed minimum sample sizes from variation recorded during 82 point counts (May 7-May 16, 1992) from three localities containing three habitat types across three regions of the Mississippi Alluvial Valley (MAV). Also, we estimated the effect of increasing the...
Authors
W.P. Smith, D.J. Twedt, R.J. Cooper, D.A. Wiedenfeld, P.B. Hamel, R.P. Ford
Yellow-headed blackbird (Xanthocephalus xanthocephalus) Yellow-headed blackbird (Xanthocephalus xanthocephalus)
No abstract available.
Authors
D.J. Twedt, R.D. Crawford
Conservation partnerships in the lower Mississippi Alluvial Valley Conservation partnerships in the lower Mississippi Alluvial Valley
No abstract available.
Authors
D.R. Loesch, D.J. Twedt, K. J. Reinecke
Warbling vireos breeding in Issaquena County, Mississippi Warbling vireos breeding in Issaquena County, Mississippi
No abstract available.
Authors
C.O. Nelms, D.J. Twedt, J. Henne-Kerr
Geographic variation in Yellow-headed Blackbirds from the northern Great Plains Geographic variation in Yellow-headed Blackbirds from the northern Great Plains
We assessed geographic variability in morphology among Yellow-headed Blackbirds (Xanthocephalus xanthocephalus) collected from breeding populations in Minnesota, North Dakota, and South Dakota in the United States and Alberta, Manitoba, and Saskatchewan in Canada during spring. Both male and female Yellow-headed Blackbirds tended to be larger in the more northern breeding populations...
Authors
Daniel J. Twedt, William J. Bleier, George M. Linz
MAPS is for the birds MAPS is for the birds
No abstract available
Authors
David L. Watts, Daniel J. Twedt, Allan J. Mueller