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3 days ago · Bird, any of the more than 10,400 living species unique in having feathers, the major characteristic that distinguishes them from other animals. They are warm-blooded vertebrates more related to reptiles than mammals. Learn more about birds in this article.
- Classification
Three basic body plans: suborder Charadrii—waders that...
- Form and Function
Bird - Anatomy, Flight, Migration: The structures associated...
- Muscles and Organs
Bird - Muscles, Organs, Flight: Birds have a complete...
- Behaviour
Bird - Migration, Communication, Adaptation: Birds depend to...
- EMU
Emu, flightless bird of Australia that is the second largest...
- Elephant Birds
Elephant bird remains are abundant, and fossil evidence...
- Classification
5 days ago · Phylogeny, the history of the evolution of a species or group, especially in reference to lines of descent and relationships among broad groups of organisms. Fundamental to phylogeny is the proposition, universally accepted in the scientific community, that plants or animals of different species.
1 day ago · Biological classification is the organization of species into groups based on meaningful similarities. These groups are then divided into smaller, more specific subgroups. Scientists classify organisms to make them easier to study and to more efficiently share information.
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2 days ago · A genus contains one or more species. Minor intermediate ranks are not shown. A species (pl.: species) is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction.
5 days ago · Common terminology for the four layers of the forest describes the forest floor, the understory, the canopy, and the emergent layer. Let’s break down these four layers and take a closer look at what animals inhabit each one, starting with the forest floor.
4 days ago · lion, (Panthera leo), large, powerfully built cat (family Felidae) that is second in size only to the tiger; it is a famous apex predator (meaning without a natural predator or enemy). The proverbial “king of beasts,” the lion has been one of the best-known wild animals since earliest times.
1 day ago · A mammal (from Latin mamma 'breast') [1] is a vertebrate animal of the class Mammalia ( / məˈmeɪli.ə / ). Mammals are characterized by the presence of milk-producing mammary glands for feeding their young, a neocortex region of the brain, fur or hair, and three middle ear bones.
