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before they can follow their mothers for short distances. They are unable to keep up with their mothers until they are more than a week old.

Black mambas are highly precocial; as hatchlings, they are fully independent, and are capable of hunting prey the size of a small rat.

Phylogeny

Precociality is thought to be ancestral in birds. Thus, altricial birds tend to be found in the most derived groups. There is some evidence for precociality in protobirds

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