Pavo cristatus
Gallus gallus
Columbia livia
None of these
Parrot
Owl
Pigeon
Sunbird
Serpentology
Entomology
Ornithology
Dendrology
Ostrich
Emu
Archaeopteryx
Pelican
finch
humming bird
weaver bird
shrew
swan
falcon
penguin
eagle
sharp massive, deeply hooked
stout and acute
chisel sfiaped
long, strong and pointed
Bernhard Katz
Alick Isacs
Charles Darwin
Andreas Wagner
Tail only
Wings only
both and
beneath the contour feathers.
Charles Darwin
Lamarck
Hippocrates
A. Muller
Albatros
Hummingbird
Elephant bird
Penguin
crow, sun-bird, flower pecker
myna, peacock, parrot
weaver bird, sun-bird, flower pecker
all of these
ostrich
albatros
penguin
elephant bird
monocondylic
dicondylic
amphicondylie
none of these
a mammal
a reptile
abrid
none of these
synsacrum
sternum
pygostyle
thoracic mass
Ostrich
Penguin
Emu
Albatros
Crow
Koel
Peacock
Ostrich
Kiwi
Ostrich
Penguin
All of these
faecal matter
nitrogenous wastes
excess salt
both and
instinct
instinct and intuition
instinct and intelligence
both and
perching type
wading type
raptorial type
running type
aerial life
amphibious life
terrestrial life
aquatic life
ectoderm
mesoderm
endoderm
skin
homiothermic condition and viviparity
horny jaws and four-chambered heart
ossified skeleton and four-chambered heart
bipedal locomotion and body covered with feathers
fly for long distance
protect against ectoparasites
exhibit secondary sexual dimorphism
keep the body warm
Heart is four-chambered consisting of the auricles and two ventricles
Hind-limbs are modified as wings
Mouth is replaced by beak
Aves are warm blooded
Dr. Salim Ali
Dr.MS.Mani
Dr.J.C.Bose
Dr. Jogendra
three toes
four toes
five toes
any of these
Asia
Africa
America
Antarctica