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Prevention and Control of Wildlife Damage

Identifying Brown or Black Pelleted Droppings

WARNING: Droppings contain medical hazards. Biohazard

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Are the droppings

Tubular ?(more long than wide) or Pelleted?(more round than long)?
Raccoon dropping. Photo by Kirk LaPierre Pelleted droppings of elk. Photo by Stephen Vantassel

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Pelleted Droppings

Bats

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.

bat droppings for scale. Photo by Stephen Vantassel

 

 

 

 

 

 

 

 

Dissected bat dropping to show insect parts. Courtesy of Morley FarwellDissected dropping showing exoskeletons of insects. Photo courtesy of Morley Farwell.

bat droppings outside an attic vent

 

 

 

 

 

 

 

 

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.

Caterpiller dropping. Photo by
Photo courtesy of Michael Colburn of California.

Photo courtesy of
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.
Cecropia caterpiller scat. Image courtesy of Simon Richardson Click for larger image.  

Cockroach Droppings

Note the small black flecks between the penny and the exoskeleton.

Cockroach droppings

 

Deer--Whitetail

 (Odocoileus virginianus)

White-tailed deer droppings are found in piles, much like those of llamas and elk.

White-tailed deer droppings. Photo by Greg Clements Add

Elk Droppings (Cervus elaphus nelsoni)

 

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. Elk droppings. Photo by Stephen Vantassel  

Mouse droppings (Mus musculus)

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.

Mouse droppings--Photo by Erin Bauer

 

Flying Squirrels

(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.

Flying squirrel droppings and urine. Photo by Stephen Vantasselflying squirrel urine and fecal staining on a house soffet

 

Rat-Norway (Rattus norvegicus)

Scat is tubular with blunt ends approximately 1/2-inch in length.

Norway rat feces. Photo by Stephen M. Vantassel

Photo courtesy of Stephen M. Vantassel.

 
     
     

 

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