近日，内(nei)蒙古乌兰(lan)察布(bu)市商都县察汗淖尔国家湿(shi)地公(gong)园迎来大(da)批迁(qian)徙(xi)的候鸟，它们成(cheng)群结队，时而在空(kong)中盘旋飞舞，时(shi)而在水面(mian)嬉戏觅食(shi)，一派生(sheng)机勃(bo)勃。