I was curious about the magpies. While I occasionally see them on Upper Canyon or in the Sangre de Cristos, I have never seen them further south than Patrick Smith park. I was curious why there would be such a sensible boundary/frontier, usually keeping my junior evolutionary theorist speculations to myself. It makes sense that the West Nile virus could have knocked out much of what was here and that now I am witnessing the southerly procession of a population growing back.
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