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Most are related to reducing weight for flight:
- Small brain with 'hard-wired' reflex-like responses
- Hollow bones
- Lungs are 'flow-through'
- Eyes do not have muscles to move them in the sockets
- Feathers
- Fused skeleton, especially the rigid backbone
- Dorsal musculature reduced or moved ventrally to lower the center of gravity
- Absence of teeth
- No external ear
- Flexible neck
- Reduced tail, reduced digits in the wings
- Keel (breast-bone) provides strong anchor for the flight muscles
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What do bats have that birds dont?
Teeth
The most important characteristic that separates birds from living reptiles is feathers?
yeah basically
Which is the most important characteristic of a food that is linked to a conditioned taste aversion for birds?
vision
Do all birds have four toes?
most birds have four toes but some dont
Why is the ability to fly not a defining characteristic of birds and what are the defining characteristic of birds?
Some birds do not need to fly, such a penguins, because their food is in the ocean, not the air. After time, they have evolved to not fly. A characteristic of a bird is a beak. Every bird has beak. Other animals, such as tortoises, turtles and dolphins, also have beaks. Every bird has feathers. Feathers keep birds warm, to keep the eggs warm and, well, they wouldn't look good without them. Every bird has 2 feet, a tail, a beak, feathers, and wings.
What birds eat catilpillars?
Cuckoos and bluebirds, plus some others that I dont know of
What is the most notable characteristic of birds which is not found in any other animals?
Feathers - the only outwardly obvious characteristic unique to birds.
What animals are NOT characteristic of the Cenozoic period?
birds
Is bird a carnivore?
dont know this question is weird 2nd Answer: Some birds, like magpies, crows, and tickbirds are carnivores. Other birds like pheasants, canaries, and finches are herbivores. Others birds are omnivores.
What characteristic distinguishes the birds from other animals?
Feathers!
What does the name avian mean?
relating to, or characteristic of birds.
In a comparison of birds with mammals having four appendages is?
a Shared ancestral characteristic a shared primitive characteristic
What are some characteristic of folktale?
i dont no
What physical characteristic show is a way birds adapt?
beak
What one characteristic do birds and mammals share that lampreys and mammals do not?
Birds and mammals are air breathers. Lampreys are not.
Pertaining to or characteristic of birds?
Aquiline ---------- "Aquiline" is specifically eagles. "Avian" is more generally pertaining to birds.
Birds have a what chambered heart?
Birds have a 4-chambered heart, a characteristic in common with mammals.
