380 USEFUL BIRDS. 
‘benefit to the orchard, by eating the eggs of the tent cater- 
pillar moth. 
Woodpeckers, Nuthatches, and Chickadees are all attracted 
by animal food. Juncos and Tree Sparrows acquire a taste 
for it during deep snows, when their usual food is buried. 
Unsalted bones, with meat, fat, or marrow attached, beef or 
Fig. 159.— Downy Woodpecker iiss on a atthe author’s window. (From Bird- 
ore. 
mutton tallow, fat, or suet may all be used for this purpose. 
Beef bones from the market, hung upon or wired to the or- 
chard trees, will furnish food for these birds. Some bones 
should be split, to expose the contents. Fat or suet will give 
the needed animal heat on which birds must rely during cold, 
stormy weather. Pork rind, even, may be used; but salt. 
meat is believed to be bad food for birds, although some will 
eat it, and Crossbills appear to be very fond of it. Ifa bird 
can get food enough, it can withstand very cold weather ; but 
if it starves, it soon freezes. Bones or suet should be put 
