Red wigglers come in many colors. The native ones move into compost piles. The other thing you may have are soldier fly larva and they are great composters.

Penny

Hi Frank

This a post from Kelly Slocum, the answer sounds like your visitors.

The worms you're seeing in your bins are, as fadoodle suggest, most likely enchytraied worms, commonly called pot worms. Common to healthy worm bins, these tiny white annelids are frequently mistaken for baby red worms, but lack the slightly pinkish tinge found in the newly hatched of their more rosy-colored cousins. After adding the salads with their high moisture and nitrogen levels to your bin the system became anaerobic, which is waht caused the foul odors. Anaerobic microorganisms produce sulfur gasses and alcohol, phenols and terpenes (and leachates with names like 'cadavarine' and 'putrecine'. Yummy!) all of which are toxic to worms at high concentrations. We often see loss of worm population when bins become strongly anaerobic. Provided the foul odors are no longer present you can add worms back to the bin and begin again, taking care to manage moisture carefully. If you have a lot of high N/high moisture feedstock consider mixing it with leaves, sawdust, paper or other carbonaceous material before adding it to the bin, as Chuckie suggests. This will balance the carbon and nitrogen in the system while absorbing excess moisture and maintaining space for air movement. Know that most vermicomposters experience at least one die- off, so you're in good company. I shudder to think of the number of worms that have died while under my management over the years! Experience is a wonderful teacher. Kelly S

frankparker...take a look at this website: happydranch.com
Click on their invertebrate page for pictures and info about all kinds of creatures found in a compost pile.