In North Aincrica it is now most coimiion in tlic r('«!;i()ii trom tlic l^ockics 



to the Pacific coast. altliou<»;li it is found as far cast as 

 P ^ Maine. Stories to the contrary notwithstandinji;, the ca^lc 



ne\-er attacks man even thoujzjh the nest is a])i)roache(l. 

 Its food consists of rabbits, scjuirrels, woodchucks and occasionally 

 >liee|). { Kei)r()(hice(l from studies near Bates Hole, Wyoming.) 



The al)un(lance of bird life in this western lake beneath Mt. Shasta, 

 w hich is seen in the center of the background, is astonishing. Here is an 



exam])le of how the normal nesting habits of a bird may be 

 ^ changed l)y its being driven into a different locality. In 



the group are white jx'licans which usually make a nest of 

 pebbles, Caspian terns which c()innionl\- build their nests on sand, and 

 cormorants that nest on rocks, all nesting together here on the tule or 

 rush islets of the lake. ( Ue])r()(luced from studies at Klamath Lake, 

 Oregon.) 



The scene represent(Hl in this group is above timber line on the crest 



of the Canadian Rockies — 8, ()()() fec^t above the sea. Al- 

 Arctic-Alpine though these mountains are in the temperate region the 

 Group altitude gives climatic conditions that would be found in 



the far north, and the bird life is arctic in character. Here 



are nesting the white-tailed ptarmigan, rosy snow finches and pipits. 



(Rei:)roduced from studies in the Canadian Rockies.) 



This grouj:) shows a stretch of western plateau covered witli sage 



bush. In this bush is seen the male sage grouse strutting 

 Sage Grouse , . , /i) i i r ^ i- ^ 



^ and woomg a mate. (Reproduced from studies at 



Medicine Bow, Wyoming.) 

 The i)rairie chickens are akin to the connnon grouse. The group 

 p . . represents a typical scene during the mating season. 



Chicken The male birds go through most surprising antics 



Group in their efforts to attract the females. They inflate the 



orange-colored sacs on the sid(\s of their necks, dancing and strutting 

 about and uttering a loud, resonant, booming note. (Re])roduced from 

 studies near Halsey, X(4)raska.) 



The wild goose is one of the flrst ])irds to migrate north in the 



s})ring. It nests in the lakes of Canada even l)efore the ice 

 Wild Goose j^ melted. To secure the young birds for this group it 



was nec(^ssary to hatch the eggs of tlu^ wild goose under a 

 hen, so difficult is it to find the young in nature. (Reproduced from 

 studies made at Crane Lake, Saskatchewan, Canada.) 



The grebe is another of our aquatic birds which builds its 



nest near the water. During the incubation period 

 Grebe Group the i)arent bird usually covers the eggs with grass and 



reeds when leaving tlu^ nest. Nesting at the same 



