precocial
Concise Oxford English Dictionary © 2008 Oxford University Press:
precocial /prɪˈkəʊʃ(ə)l/
▶adjective Zoology relating to or denoting a bird or other animal species whose young are hatched or born in an advanced state and are able to feed themselves almost immediately. Often contrasted with altricial.
– origin C19: from mod. L. Praecoces (the name of a former division of birds, pl. of L. praecox ‘mature before its time’) + -ial.
'precocial' also found in these Oxford entries:
