Both bats and birds are warm-blooded vertebrates that use their forelimbs as wings.
Birds an Mice share some of the characteristics like : i) They both eat grains. ii) they both are herbivorous , carnivorous and omnivorous.
Fundamental characteristics that frogs and birds share include that they feed on other organisms and they move. Frogs and birds are vertebrates and they are multicellular.
Bats are not birds because they are mammals as they have the characteristics of a mammal. They have these characteristics which enable them to be classified as mammals. They are warm blooded, and they have fur.
They share the characteristics of all birds, feathers, warm blood, laying of eggs.
Marsupials are mammals, so share all features with other mammals. As well, they are vertebrates, so share the characteristic of having a backbone with birds, fish, reptiles and amphibians. Like birds and reptiles, mammals breathe via lungs (rather than gills), and like birds, they are warm-blooded.
Birds and mammals are mutually exclusive categories of animal. Monotremes (duckbilled platypus and echidna) are sometimes incorrectly said to be "half-bird" because they lay eggs instead of giving live birth, but they share more characteristics with mammals and are classified as such.
Yes. they share many characteristics.
Bats do, birds do not
Nothing, there not the same. They don't share characteristics.
Which organims would share the most characteristics
The characteristics that a pea plant does share are color variants
Homologous characteristics (as opposed to analogous characteristics, eg a bats wing and a birds wing). So I guess its called homology?