• Publications
  • Influence
Austral Bird Migrants in Paraguay
In the temperate latitudes of South America, populations of many species of austral bird migrants move northward from their breeding grounds to warmer latitudes during the austral winter. We identifyExpand
  • 45
  • 4
  • PDF
SEASONALITY, HABITAT USE, AND FLOCK SIZES OF SHOREBIRDS AT THE BAHIA DE ASUNCION, PARAGUAY
A~~~a~~r.-Twenty species of shorebirds were recorded during 47 censuses along the margins of the Paraguay River at the Bahia de Asuncion, Paraguay, from 1987-1989. The numbers of most NearcticExpand
  • 20
  • 3
  • PDF
A PHOTOGRAPHIC GUIDE TO THE BIRDS OF JAMAICA
Review of: A PHOTOGRAPHIC GUIDE TO THE BIRDS OF JAMAICA.  Authors: Ann Haynes-Sutton, Audrey Downer, and Robert Sutton. 2009. Princeton University Press, Princeton, NJ. 304 pp. ISBN:Expand
  • 3
  • 3
The Amazon River as a dispersal barrier to passerine birds: effects of river width, habitat and taxonomy
Aim  To evaluate the relative effectiveness of the lower and upper sections, respectively, of the Amazon River as a barrier to bird distribution, and to evaluate ecological and taxonomic factorsExpand
  • 152
  • 2
GEOGRAPHIC VARIATION, HYBRIDIZATION, AND THE LEAPFROG PATTERN OF EVOLUTION IN THE SUIRIRI FLYCATCHER (SUIRIRI SUIRIRI) COMPLEX
Abstract The Suiriri Flycatcher (Suiriri suiriri) of South America is represented by three distinct forms occurring in parapatry: (1) S. s. suiriri to the southwest in the Chaco/Pampas; (2) S. s.Expand
  • 18
  • 2
Morphologically derived ground squirrels from the Borchers local fauna, Meade County, Kansas, with a redescription of ?Spermophilus cragini
ABSTRACT We provide a description of the complete adult and upper deciduous cheek dentition of ?Spermophilus cragini, previously known only from M1–M3, from the transitional Blancan–IrvingtonianExpand
  • 12
  • 2
Distributional ecology of the anemone shrimp Periclimenes rathbunae associating with the sea anemone Stichodactyla helianthus at Tobago, West Indies
We studied the distributional ecology of the anemone shrimp Periclimenes rathbunae associating with the anemone Stichodactyla helianthus in Tobago, West Indies. The shrimps occupied 83.1% of theExpand
  • 9
  • 2
  • PDF
Geographic variation, hybridization, and taxonomy of New World Butorides herons
•o e New World B•torides h rons comprise three distinct forms whose taxnomy has been debated: the rufous-necked Green Heron (B. virescens) of North America, Central America, and the West Indies; theExpand
  • 5
  • 2
  • PDF
...
1
2
3
4
5
...