1. Of or relating to birds of a particular region or period
   - avifaunistic

See also: avifauna

• unify
• unifying
• unilateral
• unilateral contract
• unilateral descent
• unilateral paralysis
• unilateralism
• unilateralist
• unilaterally
• unilingual
• unilluminated
• unilluminating
• unilocular
• unimaginable
• unimaginably
• unimaginative
• unimaginatively
• unimagined
• unimitable
• unimodal
• unimpaired
• unimpassioned
• unimpeachable
• unimpeachably
• unimpeded