"wagtail" 的定义和意义

What is a "wagtail"?

A wagtail is a small to medium-sized bird characterized by its long tail that constantly wags up and down. They have slender bodies, pointed bills, and a distinctive habit of bobbing their tails as they walk or hop on the ground. Wagtails are known for their energetic and lively behavior, often seen darting and flitting around water bodies and open spaces in search of insects and small invertebrates. They have a distinct plumage pattern, typically with a combination of black, white, and gray feathers. These agile birds are often found near water sources such as streams, ponds, or wetlands, where they feed and nest. Their melodious calls and graceful movements make them a delight to observe in nature.