Are birds mammals?  Why, or why not?
472645
No, birds are not mammals. Modern systematics (phylogenetic systematics or cladistics) define all groups by shared derived characters - synapomorphies-. Thus, mammals as a crown group (that is, considering only all the living species and their latest common ancestor) are tetrapod vertebrates with fur, with lower jaw formed by a single bone (the dentary), middle ear with three ossicles, and which nurse their young with milk. There are more characteristics of the group, but any animal that fulfills these conditions is a mammal.\nThe crown-group of birds (Aves) includes vertebrates with feathers, with a beak covered in a horny sheath, lacking teeth, and which lay eggs with a special shell mineralization type; also they have several skeletal specializations. However, many of these traits are shared with non-avian archosaur reptiles (especially dinosaurs) - which is why I mentioned the crown-group. \nThese characteristics of birds and mammals are mutually exclusive. The last common ancestor of these groups was a basal Paleozoic amniote, because the reptile line that gave origin to mammals (the Synapsida) was already differentiated by the end of the Paleozoic, whereas birds evolved within the Archosauria (Sauropsida diapsid reptiles) in the Mesozoic Age.
98271
Flamingoes do indeed fly.  \n\nThere is a great classification system in biology that goes Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.  \nBoth Birds and Mammals belong to the Domain Eukarya, Kingdom Animalia, Phylum Chordata (the vertebrate animals); but they do not belong to the same classes...\n\nFlamingoes belong to the Class Aves, the birds, which is characterized by toothless animals that are covered in modified scales known as feathers.  Aves also have special features such as hollow bones, fused vertebrae, a keeled sternum, and a modified collar bone known as a furcula.  Birds are warm blooded, just like mammals are believe it or not!  It is believed that birds may have descended from dinosaurs!  Dinosaurs are also thought to have been warm blooded.\n\nMammals belong to the class Mammalia, which is charactarized by animals that have hair, or fur, and mammary glands with which to feed their young with. Mammals develope their young internally in a placenta (mostly, except for marsupials). Birds lay an egg which contains a yolk used to feed their young during development.  After hatching, some species of birds continue to feed their chicks, and some species do not. There are two known mammals that lay eggs, they are called monotremes and include the duck billed playpus and the echidna.\n\nI hope this helps.
1010312
yes.\n\nthey are mammals and do not breathe underwater.\n\nthey take in air at the surface, so it does not matter what type of water they live in.
404562
cows pigs goats sheep horses dogs and cats give birth to live young and feed them on milk. They are mammals\n\nchickens ducks geese turkeys lay eggs . They are birds.
711473
other animals ....of course.\n\nDo you know about plate tectonics?
241563
Bats are mammals and they do fly like birds.Squirrels can only glide a limited distance.
186371
Why do you want to know this? Since they are mammals, they also mate for life. If you are asking if they are monogamous, they are not. The female does not form a permanent bond with a male. So, does this answer the question?
331230
Yes.  A whale is a mammal, and one characteristic of all mammals is that they reproduce sexually.
1331
humans are mammals, which, yes, are animals.  humans are animals, and as such, fall prey to the same biological urges.  the main drive in life is procreation.  :)  life begets life and all that jazz.
531960
The duck-billed platypus is one of the very few mammals who lay eggs.It comes under the category of mammals because it has mammary glands present. The duck-billed platypus has both the features of a reptile as well as a mammal, thus it stresses on the fact that mammals have come after reptiles in termas of evolution and mammals have gradually evolved into themselves through reptiles which act as a connecting link.
690764
food chain and bird food
236051
All animals that have mammary glands to produce and feed their young ones with MILK are mammals. So Rodents like rats,mice and bandicoots are all mammals.BUT all mammals are not rodents. Lions and Elephants ARE mammals but they are NOT rodents.All human beings are mammals.But are they rodents? The last example will clear any doubt in your mind.\nRodents have their own peculiarities, which set them apart from other mammals.\nThey have burrowing habits, the front teeth or the incisors are longer than the others, sharp and pointed. They continue to grow for long. Therefore. The animal must constantly ‘GNAW’ at something to keep them trim and sharp.\n Besides the examples quoted above; the others in the category of rodents are rabbits, hares, squirrels and otters. They all come under class- Mammalia and order-Rodentia.
360611
Birds and bees? There are birds and bees? What do birds and bees do together?
542641
I know that dinosaurs are most closely related to birds...but in answering this question i found that birds are reptiles! Who knew? So the answer is yes.
134740
Animals do speak, just not human speech.  Their vocal muscles are developed in a certain way to make their "language" possible.  Can you "talk" like a Bear?  Probably not. (I hope not ;-) \n\nAnimals "talk" to each other using sounds that may sound like noise/grunts to us.\n\nSome animals can be trained to make sounds to seem like human language.  The obvious is birds/parrots.  I have seen cats and dogs "talk" simple things like 'Hello', or even 'I love you'.
170152
Interesting question! As I do not know the answer, I started researching. It appears that other mammals are also collectively known as flock: camels, goats and lions, at least. \nHere's my two cents: \nThe term "flock" derives from an Old English word (flocc) which meant "a group of persons". Later it extended to mean "a number of animals of one kind moving or feeding together" applied to domestic animals. \nSo the question could be "Why are not all groups of domestic animals called flocks?"
43957
birds can be found all over the world. It all depends on what kind of bird.