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Right Image: Close up of bat droppings with a penny for scale. Note the white speckles in this fresh guano. Those speckles are the remains of undigested insect wings.
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 Dissected
dropping showing exoskeletons of insects. Photo courtesy of Morley
Farwell. |
Bats often defecate when leaving the building they are living in. Sometimes you can see droppings caught in spider webs too. Bat droppings will tend to be in piles in the attic below where they roost during the day. WARNING: Don't enter attics without wearing proper protection, which includes but is not limited to, HEPA Filter Mask, rugged gloves, long pants, and good lighting. Make sure masks are properly fitted and that you are healthy enough to breath with a mask. |
Caterpiller Droppings
These tend to be squarish and cubed, but they can be easily confused with bat droppings. Often found in piles along vinyl sided buildings. |
Photo courtesy of Michael Colburn of California.
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Photo courtesy of John Losse. |
Cecropia Caterpiller Droppings
Typically found under trees. Pellets will be green (when fresh)
and turn brown. Will be segmented into six parts. Photo courtesy of
Simon Richardson. |
Click for larger image. |
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Cockroach Droppings
Note the small black flecks between the penny and the exoskeleton. |
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(Odocoileus virginianus) White-tailed deer droppings are found in piles, much like those of llamas and elk. |
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Elk droppings occur in piles, the same as done by deer and llamas. Elk droppings are larger than deer droppings. Note the U.S. Nickel in the photo on the left side of the image.  |
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Tend to be black (hard when dry) pointed on one end and about 1/4-inch in length. Found in scattered patterns in high traffic areas. |
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(Tribe: Pteromyini)
Warning: Never enter an attic without proper protection. Flying Squirrel excrement has been known to contain typhus.
Top Photo: Note how the droppings appear moist. This photo was taken of the area directly below the attic vent the flying squirrels were using to exit and enter the building.
Bottom Photo: Note the subtle staining in the soffet. |
 
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Rat-Norway (Rattus norvegicus)
Scat is tubular with blunt ends approximately 1/2-inch in length. |
Photo courtesy of Stephen M. Vantassel. |
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