Every speices.
Yes there are modified bird feeders for many birds, for example a hummingbird feeder has small holes for their different beaks. There is no bird feeder for all birds.
About 40000 but there are many different authorities defining what exactly is a species of bird. According to Chris Packham's Nature Handbook, there are 10,000 known bird species on the planet.
Turkeys are considered flightless birds because they do not fly a lot, however they are considered birds because they have wings, beaks, and many other bird characteristics.
Bird beak sizes, many birds of the same species had different size beaks to pick up different size foods, thus suggesting they 'spontaneous' evolved
YOUR MOM many birds do
1,200 birds are currently extinct
Many birds have different types of beak structures. There's thick, triangle-like beaks which finches have to crack shells. Insect-catching birds have thin, medium-sized beaks to pick at bugs on the ground. Some birds who have these kinds of beaks are swifts, swallows, phoebes, and kingbirds.
There are around 10,000 species of bird in the world.
no there are many other species of birds in Antarctica
Yes, there are many species of birds that live in the desert.
Nearly 1,400 Species of birds live in the rain forest, but there are more to find!
Birds can differ from each other in many ways. Different species differ in both size and appearance along with instincts and ways. Birds of the same species can differ from each other just the same way as humans. E.g each person is different in their own way due to attitude, colour and thought. It's exactly the same. Many birds have hooked beaks, many have beaks for siphoning water and others have beaks for catching insects. Their diet varies beyond group species as do their appearance. Many birds may look the same but they each differ in thought, language, colour, size and diet.