Cattle Experiments Pennsylvania Research 
10,000 Birds
JANUARY 5, 2016
To an intermediate-level birder like me, the material in Better Birding –highly focused, detailed, based on the latest research and years of field experience– is daunting, but also fascinating. Sullivan are birders as well as writers, researchers, and organizational administrators, and this makes a big difference.
10,000 Birds
NOVEMBER 20, 2012
Thus, the cattle we raise for meat and dairy are sometimes called Bos taurus while the extinct wild form is always called Bos primigenius. Early research suggested that “Fragmented distributions and population bottlenecks due to human activities appear to have increased genetic differentiation among populations” (Leberg 1991).
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