Bird Cuculidae is a family of birds from the order Cuculiformes, this bird is spread across the continent of Australia and the old world. The bird species of Cuculidae some have very bad behaviors against other birds, they place their eggs in other bird's nests, and other birds hatch to hatch and nurture them.
This bird has a variety of body sizes, ranging from small birds like ear-black and large-sized birds like australia karakalo birds. These birds have a dandy fur, the body is elongated and the tail is rounded there is also a forked. The shape of the wings of this type of bird is tapered there is also a round, typical beak Cuculidae bird species with curved and various sizes according to its type. The limbs are zigodactyl, with two fingers forward and two backward, with short shapes for the arboreal type and strong length for terrestrial bird species.
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