FILE - TO GO WITH TEXAS ECOSISTEMAS - In this Aug. 6, 2011 file photo dead vegetation surrounds a white tail fawn and a doe as they walk towards a nearby watering source early in the evening at a ... more 
FILE - TO GO WITH TEXAS ECOSISTEMAS - In this Aug. 6, 2011 file photo dead vegetation surrounds a white tail fawn and a doe as they walk towards a nearby watering source early in the evening at a private ranch that straddles Tom Green and Coke County Saturday Aug. 6, 2011, near San Angelo, Texas. Wildlife biologists believe the worst yearlong drought in Texas history will have a lasting impact on the entire ecosystems. (AP Photo/Tony Gutierrez, file) less 
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Associated Press | Photo By Tony Gutierrez, file
Tue, Aug 9, 2011 1:15 PM EDT