Jan., 1921 ACORN-STORING BY THE CALIFORNIA WOODPECKER 11 
themselves. The impression from this was that while hole-drilling had been 
as conveniently and largely done high up as low down on the trunk, nut stor- 
age, since probably done for the most part, as previously seen, from nuts gath- 
ered on the ground, had been more convenient and so more practiced on the 
lower portion of the trunk. 
On this visit the stub of a long-dead, bark-denuded oak, probably a black 
oak, was examined, which was used by the woodpeckers as a granary, though 
Fig. 4. a, A SOUND MEAT BUT NEARLY BLACK FROM AGE (HAD 
BEEN IN HOLE ABOUT 20 MONTHS); 0, A SOUND MEAT HARDLY 
DARKENED AT ALL (HAD BEEN IN HOLE OVER ONE WINTER); C 
AND @, SHELLS CONTAINING WORM LEAVINGS, BUT WORMS GONF; 
€, SHELL, FROM WHICH A SOUND MEAT HAD BEEN TAKEN—NO 
WORM LEAVINGS; f, 9, h, SHELLS OPENED ON THE SIDE; THE 
OPENING OF 9g, ESPECIALLY, IS SO FAR TOWARD THE TIP THAT IT 
COULD NOT HAVE BEEN MADE WHILE THE ACORN WAS IN PLACE 
IN THE BARK. 
a majority of the holes contained no acorns and there was no evidence around 
the tree of recent acorn consumption. One of the most striking things here 
was the relation of the holes to cracks in the wood. In many instances a row 
of holes, some mere beginnings, followed, and were made as local enlargements 
of. a crack. Some of these holes contained acorns and some did not. Again, 
acorns had in some instances been placed in larger cracks where no drilling 
