コモンマーモセットの生体の平均的な大きさは？
コモンマーモセット
Common marmosets employ a number of vocal and visual communications. To signal alarm, aggression, and submission, marmosets use the "partial open mouth stare," "frown," and "slit-stare", respectively. To display fear or submission, marmosets flatten their ear-tufts close to their heads.[13] Marmosets have two alarm calls: a series of repeating calls that get higher with each call, known as "staccatos"; and short trickling calls given either intermittently or repeatedly. These are called "tsiks". Marmoset alarm calls tend to be short and high-pitched.[16] Marmosets monitor and locate group members with vibrato-like low-pitched generic calls called "trills".[21] Marmosets also employ "phees" which are whistle-like generic calls. These serve to attract mates, keep groups together, defend territories, and locate missing group members.[21] Marmosets will use scent gland on their chests and anogenital regions to mark objects. These are meant to communicate social and reproductive status.[13]