Chapter C: T. Vorhies, 1945, Univ. Ariz. Agri. Exp. Sta. Tech. Bull. 107

(water need in desert). J. T. Emlen, Jr., and B. Blading, 1945,
_Univ. Calif. Coll. Agri. Bull._ 695, p. 34 (valley quail). E. G.
B. Meade-Waldo, 1922, _Bull. Brit. Orn. Cl._, Vol. 42, p. 69 (sand
grouse).

BIRD GRAVEYARDS

R. C. Murphy, 1936, _Oceanic Birds of South America_, Vol. 1, p.
372 (penguins). U. M. Grigg, 1950, Brit. Birds, Vol. 43, pp. 11-13
(graveyard in hollow tree). G. Simmons, 1927, _Nat. Geog. Mag._,
Vol. 52, p. 27 (petrel bones on Cima).

ANIMAL GARDENS

R. C. Murphy, 1936, _Oceanic Birds of South America_, Vol. 1, p.
374 (penguins). F. Harper, 1953, _Amer. Midland Nat._, Vol. 49, p.
6 (birds and lichens). H. W. Feilden, 1877, _Zoologist_, Vol. 1, p.
319 (arctic-fox gardens).

DROPPING THINGS