Related Clues:
- 6 Down dwellers
- Cabin lights are usually turned off during them
- Halloween critters
- Hooting birds
- Butterflies' cousins
- Flutters, as eyelids
- Temple attenders?
- Some lepidopterans
- Echolocating fliers
- Temple U. athletes
- Birds with binocular vision
- Bulb circlers
- A group of them is called a parliament
- Dugout display
- Fly-by-night group