Altricial
만숙성
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<speciesfyi-glossary slug="altricial"></speciesfyi-glossary>Definition
Describing bird chicks that are helpless at hatching, requiring extended parental care for feeding and warmth.
Detailed Explanation
Altricial chicks have small eggs relative to adult body size but grow rapidly under intense parental care. The extended nestling period in cavity-nesting altricial species (like woodpeckers and raptors) provides greater protection from nest predators than exposed nests. The prolonged parental investment enables more complex learned behaviors — altricial species are generally more cognitively flexible than precocial species, reflecting the tradeoff between developmental speed and brain complexity.