I just received this email from my friend (Ken) who lives near Cloverdale on the Oregon Coast. I promised him I'd do my best to try and come up with an answer for him. Any/all help from my OBOL friends would be appreciated. Nels Ken's e-mail reads: My yard is full of beautiful, blooming flowers of every color, kind - and description for my hummers (about 25 or 30) to feed on, which they do daily, from dawn to dark, in addition to going through about two quarts of hummingbird mix a day - which I have always made with the same combination of sugar and boiling water, plus three drops of red dye per quart for color. And every summer, my adult Rufous and Anna hummingbirds have headed south during the first week of July, with the young hummers leaving the following week, except for two or three Annas that stay here year around. Last Wednesday, - the first week in June (not July), all the hummers - both adults and young left, all at the same time, leaving only the two or three Annas that stay here year around. Why a full month earlier than usual?