multibird en · ADJ
Etymology
From multi- + bird.
Meanings
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(not-comparable) Of or relating to more than one bird.
Most important, however, physiology in bushtits may also explain the formation of multibird nests, as explained above, entirely independent from the formation of kin groups.
1992, Sarah Anne Sloane, Supernumeraries at bushtit (Psaltriparus minimus) nests, page 50: