June 9 Canadian Rockies 119 At 6:30 a.m. at Banff, heard Robins and Chipping Sparrows singing. Altitude 4520 feet. Canadian zone - spruces, aspens and birches. Snow down below timberline on both sides of the canyon. A little above Banff, towards Lake Louise, all deciduous growth gives out, just as it did up the mountain slopes at Banff. The whole floor of the valley is therefore covered with dense small growth of 2-leaft pines (P. contorta?). Possibly this is Hudsonian Zone, tho scattering timber goes at least 2000 feet higher up the adjacent slopes. 8:00 a.m., at station of Lake Louise, alt. 5030 feet: at least 8 Violet-green Swallows flitting about, and several Juncos heard in song. Cloudy and beginning to rain. Small willows are barely budding yet. 8:25 a.m. - Over the "Great Divide",