bird-watching

n.

（尤指为了发现奇异或稀有鸟类而进行的）鸟类观察；

v.

观察野鸟的外表或生活动态等( bird-watch的现在分词 )；

Bird Watching
Bird watching
Bird Watching
A mobile scaffolding-aid-based bird-watching learning system
A mobile scaffolding-aid-based bird-watching learning system
Warplanes go bird-watching
A mobile scaffolding-aid-based bird-watching learning system
Economic values of bird-watching at Point Pelee National Park, Canada.
Preferences and willingness to pay for bird-watching tour and interpretive services using a choice experiment.
Pictures, Texts, and Objects: The Literary Language Game of Bird-Watching
BIRD-WATCHING, ECOTOURISM, AND ECONOMIC DEVELOPMENT: A REVIEW OF THE EVIDENCE
Bird survey and assessment of 3 bird-watching routes in Zhalong Nature Reserve in early spring
Bird-Watching and Biological Science. Some Observations on the Study of Courtship in Birds (Concluded)