Cooperative Research Units
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Avian productivity and survivorship on the Welder Wildlife Refuge.


September 2007 - December 2009


The collection of data presented in this thesis occurred during the summers of 2007, 2008, and 2009 on the Rob and Bessie Welder Wildlife Foundation Refuge in San Patricio County, Texas. This study focused on avian ecology and communities in the Texas coastal bend. The objectives of this study were to assess avian productivity and survival through operation of two netting arrays, conduct point counts at netting arrays to estimate species richness and abundance, and monitor nestling diet of sympatric Golden-fronted (Melanerpes aurifrons) and Ladder-backed Woodpeckers (Picoides scalaris).

Research Products and Activities

Peer Reviewed Publications

  • Schroeder, E., C.W. Boal, and S.N. Glasscock. 2013. Nestling diets and provisioning rates of sympatric golden-fronted and ladder-backed woodpeckers. Wilson Journal of Ornithology 125:188-192


  • Schroeder, Evonne. 2010. Annual productivity and survival of birds in different vegetation communities of the Welder Wildlife Refuge. M.S., Texas Tech University.

Current Staff

Federal Staff: 95

Masters Students: 238

Phd Students: 144

Post Docs: 54

University Staff: 239

5 Year Summary

Students graduated: 673

Scientific Publications: 1905

Presentations: 4236



  • Clint BoalPrincipal Investigator
  • Evonne SchroederStudent


Cooperative Research Units Program Headquarters Cooperators

  1. U.S. Geological Survey