Lacking a nest or nesting structure; describes animals that do not build or use nests.
From Latin an- (without) + nidus (nest) + -ian (adjective suffix). This biological term was created in scientific classification to distinguish species by their nesting or non-nesting behavior.
Many anidian birds are 'brood parasites' like cuckoos—they've evolved to never build nests because they trick other birds into raising their chicks, which is basically ornithological crime.
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