36 OUR NATIVE BIRDS 
prevailing rain storms. On buildings, the east side 
is the most desirable, but the north side will also do, 
if protected by an overhanging roof. ‘The south and 
west sides are likely to 
be too hot unless they 
are shaded. No box 
will be occupied that 
is readily accessible to 
cats. 
Special Directions. — 
Measurements are given 
in inches unless other- 
wise stated. 
1. TVitmice, Chicka- 
dees, and Wrens. —In- 
side measurement of box 
about 7 x 5 x 5, place 
it against out-buildings 
or on trunks and limbs 
of trees from 6 to 12 
feet high. Size of en- 
trance about 1} inches 
in the middle of the board, a little widened both toward 
the inside and the outside. Nail a little last } an inch 
below the entrance. If the hole is too large the English 
sparrows will move in, if too small you are likely to have 
Fic. 6.— TREE TRUNK WITH BARB 
WIRE COILS. 
wasps or bees as your renters. ‘The birds referred to 
will not nest near the gathering places of English spar- 
rows. I have observed the house wren build in a box 
that had the entrance in one of the lower corners with 
