grain-eating birds
meat-eating birds
fruit-eating birds
insect-eating birds
A. grain-eating birds
sharp eyesight
keen smelling power
both and
sharp eyesight and poor smelling power
New Zealand
India
Japan
Australia
larynx
syrinx
synsacrum
pygostyle
aerial life
amphibious life
terrestrial life
aquatic life
peacock
emu
penguin
ostrich
mammals
reptiles
aves
lizards
amphi-coelous
hetero-coelous
gastro-coelous
platy-coelous
Ostrich
Penguin
Emu
Albatros
day light effecting the endocrine glands
search for food
search for shelter
purpose of breeding
Bernhard Katz
Alick Isacs
Charles Darwin
Andreas Wagner
ostrich
albatros
penguin
elephant bird
Charles Darwin
Lamarck
Hippocrates
A. Muller
Kiwi
Ostrich
Penguin
All of these
Parrot
Owl
Pigeon
Sunbird
crow, sun-bird, flower pecker
myna, peacock, parrot
weaver bird, sun-bird, flower pecker
all of these
synsacrum
sternum
pygostyle
thoracic mass
Pectoralis major
Pectoralis minor
Intrinsic muscle
None of these
Pavo cristatus
Gallus gallus
Columbia livia
None of these
csursorial
perching
wading
raptorial
middle of the trachea
at the base of trachea where it divides into bronchi
base of tongue
none of these
Albatros
Hummingbird
Elephant bird
Penguin
grain-eating birds
meat-eating birds
fruit-eating birds
insect-eating birds
Asia
Africa
America
Antarctica
Ostrich
Emu
Archaeopteryx
Pelican
syrinx
larynx
synsacrum
synzygy
heterocoelous
acoelous
opisthocoelous
amphicoelous
faecal matter
nitrogenous wastes
excess salt
both and
ectoderm
mesoderm
endoderm
skin
swan
falcon
penguin
eagle
Serpentology
Entomology
Ornithology
Dendrology