468 
BIRDS OF NEW MEXICO 
pairs were living in one tree. Food was being carried in to the young 
the middle of July. 
As the country becomes settled, the social Purple Martins, attracted 
perhaps by the unfailing supply of insects, come to live about houses, 
gladly accepting the offer of old gourds hung from dead trees or poles 
Triangles mark breeding and breeding season records, mainly in Transition 
Zone 
to nest in, but preferring apartment houses where a number of families 
can enjoy each other’s society. “Any kind of a weather-tight box or 
barrel, however rude,” Mr. Henshaw says, “when divided into com¬ 
partments answers their needs as well as the most costly and orna¬ 
mental house.” But the rooms should be four and a half inches 
wide, seven inches high, and eight inches deep, with entrance hole 
about two and a half inches across; and the house should be fifteen or 
