REFERENCES 
117 
a bird’s temperament affect its numbers? Give illustrations. When were 
Bluebirds destroyed by a blizzard? How long before their numbers reached 
normal? What is the probable reason of their sudden increase? 
References 
1883. Martin and Moale, How to Dissect a Bird (Macmillan). — 1884. 
Coues, E., Key to North American Birds (Dana Estes) rev. ed. 1902, Vol. 
I, pp. 59-233 (important)/ — 1893-1896. Newton, A. and others, A Diction- 
ary of Birds, 1 vol., 1088 pp. (Macmillan). — 1894. Morgan, C. L., An 
Introduction to Comparative Psychology, 12mo., 382 pp. (Scribner’s). — 
1895. Headley, F. W., The Structure and Life of Birds, 12mo. 412 pp., 
ills. (Macmillan). — 1898. Beddard, F. E., Structure and Classification of 
Birds, 8vo., 548 pp., ills. (Longmans). — 1897. Basket, J. N., The Story 
of the Birds, 12mo., 263 pp., ills. (Appleton). — 1906. Beebe, C. W., 
The Bird. Its Form and Function, 8vo., 496 pp., ills. (Holt). — 1910. 
Pycraft, W. P., A History of Birds, 8vo., 458 pp., ills. (Methuen, London). 
— 1910. Herrick, F. H., Instinct and Intelligence in Birds, Pop. Sci. 
Monthly, June, July, and August. — 1911. Various Authors, Journ. of 
Animal Behavior (Holt). 
