HOMES AND DOMESTIC HABITS 265 
care of the young are the rule, and a high degree of devel- 
opment in these habits is reached. All of us are familiar 
with many different kinds of nests, from the few twigs 
loosely put together by the mourning-dove to the firm, 
closely knit, wool or feather lined nest of the humming- 
bird (Fig. 159), and the basket-like hanging nest of the 
oS — < bh = » 
Fria. 159,—Nest and eggs of the Rufus humming-bird (Trochilus rufus). Photograph 
by J. O. SNYDER, Stanford University, California, 
