42 Proceedings 
in the fork of a cactus bough and is a large and conspicuous 
object built of twigs and domed like a Dipper’s. The Cac- 
tus Wrens nest in small colonies. It is evident that man 
is not the enemy they have to fear. But probably no crea- 
ture but man can attack their nests without damage from 
the cactus thorns. Against rats, snakes, birds of prey, 
squirrels and other enemies the thorns are a sufficient 
barrier. Early in April I found nests in one colony contain- 
ing respectively, nearly fledged young, and newly laid eggs. 
I found fresh eggs again in the first week in May. In Feb- 
ruary many of the nests were well lined and in perfect order 
and were, I suspect, used by the birds to roost in. 
From the 15th of April till early in May the arrivals of 
migrants from the south were very numerous. I noted the 
following: Western Kingbird, Cedar Bird, Cliff-Swallow, 
Western Night Hawk, Western Purple Martin, Phainopepla, 
Lazuli Bunting, Western Tanager, Summer Warbler, Black- 
headed Grosbeak, 
Of these the Cedar Birds and Purple Martins only stayed 
a few days before going northward to the mountains. The 
rest settled down to breed. 
Several of these summer migrants are very handsome 
birds. The head of the male Tanager is Crimson, the back 
and wings are black, the latter barred with yellow. The 
breast is yellow. 
The Phainopepla, a relative of the Waxwings, is glossy 
black and is crested. The under sides of the wing feathers 
are white and are conspicuous when the bird is flying. 
The Lazuli Bunting is a bright azure blue. 
The Summer Warbler is a canary yellow. 
The Night Hawk is closely allied to our Nightjar. I 
found its pair of eggs laid on the bare ground in the‘‘wash” 
at Redlands. 
The plumage of the Black-head Grosbeak is made up of 
black, orange-brown and white. I found its flimsy nest 
of dry bents and fibres in an elder bush at a height of about 
8ft. from the ground. The birds were very fearless. Both 
of them remained in the bush and scolded whilst I exam- 
ined the nest. By the time I had ridden round the bush, 
so 
