Denver Audubon received a call from Dave, who lives in Johnstown. He confirmed that an
American Robin built a nest, incubated on it, and then a Eurasian
Collared-Dove incubated the same nest with the robin watching from a few
feet away. Then the robin took over incubation, then the dove, and
finally now the robin is back incubating. This has gone on over a couple
of days. Barbara Fahey (Den. Audubon volunteer) asked if he could i.d. the eggs but no, the nest is 20 feet up.
We look forward to more information from Dave.
Do any Cobirders have thoughts about this bizarre affair
Hugh Kingery