Definition

Adjective: 1. (Zoology, specifically ornithology) Describing a species of bird whose young are hatched in a relatively undeveloped state (often blind, featherless, and immobile) and remain in the nest, dependent on parental care for food and warmth, for a significant period after hatching.

Usage

This is a specialized scientific term used primarily in zoology and ornithology to classify and describe the developmental strategy of certain bird species. It contrasts with "nidifugous."

Examples

• General Statement: "Robins and sparrows are classic examples of nidicolous birds; their hatchlings are completely helpless."
• Comparative Context: "In contrast to nidifugous chicks like ducks, nidicolous offspring require extensive parental investment."
• Scientific Description: "The nidicolous nature of the species means both parents must work constantly to feed the brood."

Advanced Usage

• The term can be applied by analogy to other animal groups where offspring remain in a birthplace (like a den or burrow) for extended care, though its primary use is for birds.
• It is often used in ecological and evolutionary discussions about reproductive strategies, parental investment, and altricial versus precocial development.

Variants and Related Words

• Nidifugous (adj.): The direct antonym. Describing birds (like chickens, ducks, or plovers) whose young are hatched in a well-developed state, covered in down, and able to leave the nest shortly after hatching to follow the parent.
• Altricial (adj.): A broader, closely related term describing young that are born or hatched in a helpless, undeveloped condition requiring significant parental care. All nidicolous birds are altricial, but "altricial" can also apply to mammals (e.g., cats, humans).
• Precocial (adj.): The broader antonym to "altricial," describing young that are relatively mature and mobile from birth or hatching. All nidifugous birds are precocial.

Synonyms

• Altricial (in the specific context of birds; see note above).
• Nest-bound (informal, descriptive).
• Helpless (descriptive, non-technical).

Antonyms

• Nidifugous
• Precocial (broader antonym)

Adjective

1. (of birds) remaining in the nest for a time after hatching