altricial
adj.
ModL altricialis < L altrix, a nurse, fem. of altor, one who nourishes < alere, to feed: see
OLD designating or of birds whose newly hatched young are helpless and hence confined
to the nest for some time; nidicolous: opposed to PRECOCIAL

Here's a URL with a lot of information about birds
http://www.howe.k12.ok.us/~jimaskew/bbird.htm