Ornithology. A migratory movement by a large number of birds, esp. over a short period from a particular location.
| 单词 | θ38391 |
| 释义 | the world > animals > birds > actions or bird defined by > [noun] > migration > migratory flock (1) rush1880 Ornithology. A migratory movement by a large number of birds, esp. over a short period from a particular location. |
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