水鳥

1. Origins, structure, and basic meaning

• Structure: 水鳥, read みずどり, combines 水, water, with 鳥, bird.
• Basic usage: It is a general term for waterfowl seen or living around lakes, river mouths, and other waterside habitats.

2. Common pitfalls and similar expressions

• A general category
  • 水鳥 does not identify a particular species by itself. Color, number, and location provide the specific context.
• The counter 羽
  • The example counts the waterfowl with 二羽, using 羽 as the counter just as it does for other birds.