NWCO - Nuisance Wildlife Control Operator Nuisance Wildlife Control Operator Wildlife Damage Identification 1

Question 1

Claw marks scratched into the bark of a tree reaching 6 to 8 feet above ground, accompanied by tufts of coarse hair caught in the rough bark, most likely indicate activity by which animal?

Accepted Answer

Black bear using the tree as a scent-marking post

Answer

Black bears stand upright and rake their claws down tree trunks as territorial scent-marking behavior, leaving deep parallel gouges well above deer-height and often depositing hair from their shoulders and back.

Question 2

A poultry house is found with a hole approximately 2 inches in diameter chewed through the base of a wooden wall, several birds killed but only partially consumed, and small, elongated scat nearby. The most likely predator is:

Accepted Answer

Mink or long-tailed weasel

Answer

Mink and weasels can compress their bodies through openings as small as 1.5–2 inches, and their hunting behavior often results in multiple kills in a single night with partial consumption, distinguishing them from larger predators that require bigger entry points.

Question 3

Small, cone-shaped excavations roughly 3 to 4 inches wide and 2 to 3 inches deep are scattered across a lawn with virtually no displaced soil mound near the holes. This foraging sign is most characteristic of which animal?

Accepted Answer

Skunk

Answer

Skunks dig neat, inverted-cone-shaped holes when rooting for grubs and beetle larvae just below the turf surface; unlike moles they do not create soil ridges, and unlike groundhogs they leave no large mound because they scatter small amounts of soil as they work.

Question 4

Multiple young orchard trees show a ring of gnawed bark removed from the lower 6 inches of their trunks during winter, with narrow incisor marks approximately 3 mm wide and the damage hidden beneath snow level. The most probable cause is:

Accepted Answer

Meadow vole girdling

Answer

Meadow voles travel beneath snow in runways and girdle tree trunks at or just below the snow surface, leaving very narrow tooth marks (about 3 mm) compared to the wider marks of rabbits or the high-elevation damage of porcupines.

Question 5

At the edge of a stocked fish pond, an inspector finds several large fish carcasses with the head and front third of the body neatly consumed while the tail section remains intact, along with fresh five-toed webbed tracks. The most likely predator is:

Accepted Answer

River otter

Answer

River otters characteristically haul fish onto shore and consume the head and anterior portion first, leaving the rear section uneaten; their large, five-toed webbed tracks and the consistent partial-consumption pattern distinguish their predation from heron spearing or turtle ambush.

NWCO - Nuisance Wildlife Control Operator Practice Test

NWCO - Nuisance Wildlife Control Operator Practice Test

NWCO - Nuisance Wildlife Control Operator Nuisance Wildlife Control Operator Wildlife Damage Identification 1