We arrived just before 10:00 AM this morning and as Al noted, the (presumed, though the bird's forehead is quite low in this view, suggesting it could be the male) female was deep into the nest, sometimes not visible at all. We watched for only about 15 minutes and she never changed position except to sometimes look up so that her eyes or part of her beak was visible. Clearly, Incubation has commenced, with the first egg most likely deposited on Saturday DEC 7 and expected hatch date of JAN 12 2014. Her mate was not in sight.