6 T HE AU; DU -BiOiN” BU) Del Ea aie 
Canyon and the Transition zone with its ponderosa pines. At 6000 feet we 
looked for birds; this was where the Andersons had once found a Painted 
Redstart’s nest. It also was the summer haunt of the Red-faced Warbler. 
Two handsome Catalina Arizona grey squirrels barked at us with a note 
something like a Blue Jay’s; they had long, light colored bushy tails, red- 
dish brown underneath. Working about on the snow-covered ground were 
Robins and Arizona Juncos; the latter were fearless and let us study at 
leisure their rufous backs, pale yellow lower mandibles and surprising 
bright yellow eyes. In the trees were Red-shafted Flickers and White- 
breasted Nuthatches, as well as a Ruby-crowned Kinglet that sang an 
elaborate, warbling song. A handsome Red-naped Sapsucker was a thrill- 
Fremont Cottonwoods at Indian Ponderosa Pines in Upper Bear 
Dam near Tucson. Canyon; Transition Zone. 
ing sight to me. Finally we heard a strange song and located a strange 
little bird with a bronze-yellow head, neck and breast — the first Olive 
Warbler any of us had ever seen. 
Madera Canyon in the Santa Ritas is famed as the summer home of the 
Coppery-tailed Trogon; it was here that Dr. Arthur Allen filmed that 
tropical creature. On our way there we passed the remnants of another 
mesquite forest and saw plenty of burroweed, Haplopappus tenuisectus, an 
invader of grasslands after over-grazing, ordinarily avoided by live stock, 
but if, in periods of drought, the animals are driven to browse upon it they 
may suffer from serious poisoning. In a great ploughed field we saw 
