2 
Ethology = 5819 : — 
PAGE 
General and Miscellaneous 
.. 38 
Food habits 
.. 38 
l^ligration, General Problems . , 
.. 38 
,, Regional Observations 
.. 38 
. „ Migration of Single Species 
.. 38 
,, Bird-marking and Fly-routes 
.. 39 
Flight • 
.. 39 
Parental relations . , . . . . 
.. 39 
Sexual relations and display 
.. 39 
Nidification, General Problems . . 
. . 39 
„ Regional Observations 
.. 39 
,, Observations on single species . . 
.. 39 
Voice 
.. 39 
Psychology . . 
. . 39 
Colour and Moult. . 
. . 39 
Pathology . . 
.. 39 
Avian Parasitology 
.. 39 
Mortality . . 
.. 39 
Variation and Aetiology = 5828: — 
Variation .. 
, , 
, , 
39 
Teratology 
, , 
, , 
39 
Hybrids . . 
. . 
, . 
. . 
39 
Heredity and Evolution 
. . 
. . 
40 
Fossil and Extinct birds 
t • 
40 
Geography = 5827 ; — 
Palaearctic Region 
40 
Ethiopian Region 
42 
Indian Region 
42 
Australian Region 
43 
Neotropical Region 
43 
Nearctic Region . . 
43 
The Oceans . . 
44 
HI. Systematic: — 
Archteopl eryges . . 
45 
Rlieiformes 
45 
Struthioniformes . . 
45 
Casuariiformes 
45 
Dinornithiformes . , 
45 
A^pyornithiformes 
45 
Tinamiformes 
45 
Galliforines 
45 
Pteroclidiformes . , 
4G 
Columbiformes 
46 
Ralliforines 
47 
^Podicipedi formes . . 
47 
Colymbiformes . . 
47 
