(adapted from Machmer and Steeger, 1995)
Wildlife tree user guild |
Feeding guild |
Predator example |
Prey example |
General remarks |
Birds of prey |
Eagles
Hawks
Falcons
Owls |
Golden eagle |
Rabbits
Hares
Rodents |
Rodents, such as voles and hares are the most common food item of 13 of the 17 species in this group. |
Bark-foraging birds |
Sapsuckers
Woodpeckers
Northern flicker
Nuthatches
Brown creeper |
Black backed woodpecker |
Bark beetles
(e.g., Mountain pine beetle) |
Forest insects make up >=75% of the diet volume in 11 of the 15 species in this group. |
Foliage-gleaning birds |
Chickadees
Warblers |
Black-capped chickadee |
Moths
Budworms
Loopers
Beetle
Weevils |
Forest insects are the most common food item of the 4 species in this group.
All 4 species are known to eat a variety of pest insects.
|
Aerial-foraging birds |
Flycatchers
Swallows
Bluebirds
Flammulated owl
Lewis woodpecker
Vaux's swift
Purple martin |
Violet-green swallow |
Beetles
(e.g., western pine beetle) |
Insects make up >=75% of the diet volume in 9 of the 10 species in this group. |
Aerial-foraging bats |
Myosis spp.
Big brown bat
Silver-haired bat
Pallid bat
Hoary Bat |
Big brown bat |
Beetles
Moths |
All 12 species in this group are insectivorous.
Investigation of specific pest species consumed are underway
|
Small mammals |
Mice
Chipmunks
Bushy-tailed wood rat
Shrew |
Wandering shrew |
Moths
(e.g., spruce budworm) |
Insects comprise part of the diet of at least 6 of 12 species in this group; 4 species are known to consume pest insects.
Fungi are the predominant food for several species.
|
Small mammals |
Martens
Weasels |
Pine marten |
Voles
Squirrels |
Small mammals such as martens subsist mainly on mice, squirrels and voles. |
|