Zebra mussel, quagga mussel, round goby and other invasive species are causing havoc on Lake Michigan. This is causing the food web to become out of balance, and may be causing birds to die. National park biologists and USGS scientists are trying to figure out what is causing this. Can this mystery be solved before the endangered great lakes piping plover becomes extinct? This video is part of Little Things: Big Problems, a series of 5-minute online videos on invasive species in the Great Lakes region that we produced for the National Park Services’ work in association with the Great Lakes Restoration Initiative. The series won a first place Gold Screen Award in the new YouTube category of the National Association of Government Communicators' annual award competition.

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