Histories of Aristotle and Theophrastus

Footless birds 14.10
Birds with very strong feathers 14.10
Birds nesting in summer hatch more quickly 131.30
At what times birds are healthier 194.20
The scenting passage of birds is contained in the beak 42.30
Eyes of birds 42.30
Birds lay in nests 130.10
How often wild birds lay 108.10
By how many signs birds move themselves 18.10
Birds that have hooked talons have the largest thighs 42.10
All birds lay eggs 129.30
The genital seed of birds 131.10
Where the female bird conceives 131.10
The auditory passage of birds 42.20
Signs of bird diseases 194.20
Birds die if they do not lay 132.30
Birds bristle after mating 132.30
Most birds have a small spleen 46.10
Eggs of birds conceived by the wind are infertile 100.10
Incubation of birds 137.20
Parts of birds 41.10
Legs of birds 41.30
What is peculiar to birds among other animals 42.10
Thigh of birds 42.10
Food of birds 181.10
Birds that have hooked talons are all carnivorous 181.10
Some male birds sing to their females 95.10
How birds manage to prevent anything from falling into the lung 43.20

Some birds are given a spur by nature 43.20
Birds that are flightless 43.20
Birds that are spur-bearing are less apt at flying 43.20
Crest of birds 43.20
What the generation of birds in an egg has in common with fish 138.30
Testicles of birds 102.20
Which birds have the principal faculty of speech 139.20
Smaller birds are more talkative 139.20
Birds are more talkative during the mating season 139.20
Young birds lay fewer eggs 109.10
How birds drink 184.20
The beak of birds grows in old age 66.30
In what parts birds differ both from themselves and from other animals 49.30
Leaders of birds 173.10
Some bird feathers change with age 66.30
Bones of birds differ little from one another 62.30
Many birds hide away 192.20
Which birds we call by name 18.10
Birds are content with little or even no drink 182.30
Birds do not have kidneys 46.30
In some birds, spurs are given to the males, but not to the females 100.10
Some birds conceive from the wind 90.30
All birds have a wealth of talons