noun
society finch; Bengalese finch
A domesticated variety of finch, commonly kept as a pet. Scientific name: Lonchura striata var. domestica.
ジュウシマツは飼いやすい小鳥です。
Society finches are easy-to-keep small birds.
ペットショップでジュウシマツを買った。
I bought a society finch at the pet shop.
The name 十姉妹 (literally 'ten sisters') likely refers to the bird's social nature, often living in groups. The exact origin is uncertain.