The American dipper, a drab-looking bird no larger than a robin, is a splashy rarity: a songbird that swims and even walks underwater. This round-bodied gray bird with short wings and a stubby tail is ...

The following devices can be used to obtain water samples directly from the dugout or pond. A sampling iron is a device made of iron or steel and painted with a rust inhibitor. Typically, it uses a ...

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