Another term for altricial.Magpie nestlings, as well as most nidicolous birds, change skin color from red to orange....
Both parents feed two to seven nidicolous nestlings.
About 95% of all birds are at least socially monogamous, with both male and female partners typically providing substantial parental care in nidicolous species.
Origin
Early 20th century: from Latin nidus 'nest' + -colus 'inhabiting' (from the verb colere 'live in, cultivate').