Duet function in the yellow-naped amazon, Amazona auropalliata: evidence from playbacks of duets and solos
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The question of why animals participate in duets is an intriguing one, as many such displays appear to be more costly to produce than individual signals. Mated pairs of yellow-naped amazons, Amazona auropalliata, give duets on their nesting territories. We inv... ...
