Date: 12/28/17 2:43 pm From: Ted Floyd <tedfloyd57...> Subject: [cobirds] Turnover at Valmont Reservoir, Boulder County, Dec. 27
Hey, all. Andrew Floyd and I ventured out to the Valmont Reservoir complex, Boulder County, yesterday evening, Wed., Dec. 27. What a change from 48 hours earlier. With strong winds, warmth, and hazy sunshine yesterday, the birds at Valmont were strikingly different. First off, a *tundra swan* was flying around out there, the peripatetic "Valmont swan," I suspect. We also saw two kinds of *Iceland gulls:* an adult *thayeri* (more or less expected here in winter) and an immature *kumlieni* (unusual in Colorado). In the old days, like, last winter, we called the former "Thayer gull" and the latter "Iceland gull." Now they are all Iceland gulls. And we found a first-cycle *lesser black-backed gull,* but no adults (on Christmas day, we saw two adults). The other recent goodies--the loons and red-necked grebes--eluded us.