After some reflection I wanted to add another interesting (to me) facet of my evening birding this night. My last stop was the Valmont Reservoir overlook where I observed Gullapalooza numbers of Franklin's Gulls. This interested me for two reasons: First, I'm not sure I've ever seen any black-headed-type gulls at Valmont (although Tim Smart saw at least a couple of Bonaparte's Gulls at the aforementioned Gullapalooza in January), although I'm not sure I've ever stopped there at sunset in early May. This evening there were easily 500 strung out over the NE of the three reservoirs (Valmont). Second, all of the black-headed-type gulls were Franklin's. The two commonest species (Franklin's and Bonaparte's) really seem to segregate themselves, at least in Boulder County. Do others observe something similar?
Bill Kaempfer Boulder -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.
