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Texas Study Finds Deer Density Correlated with more Birds, June, 2011



Texas Study Finds Deer Density Correlated with more Birds,  June, 2011  "Effects of deer overabundance on avian abundance, diversity, and reproductive success in Central Texas" by Jinelle H. Sperry, Ph.D.

Contrary to our predictions, there were significantly more birds (t = 2.86, P < 0.01; Fig 1) and bird species (t = 2.46, P = 0.01; Fig 1) detected per point on the BCP compared to the ranch sites.. We found that nest survival was slightly lower on the BCP [Balcones Canyonland Preserve, not deer managed, higher deer density] sites (model averaged estimate = -0.44) although the 95% confidence intervals encompassed zero (-1.10, 0.23), indicating a weak effect [not statistically significant].


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