清晨的海滩上，一群滨鸟正在潮水线附近啄食小螃蟹。

At dawn, flocks of ___shorebirds were pecking at small crabs along the tide line.

每年春秋两季，这些候鸟都会在海岸线上停留觅食。

Every spring and fall, these ___shorebirds stop along the coastline to feed.