Wildlife Nuisance Chart
​

NUISANCE WILDLIFE COMMON TO COLORADO SPRINGS: NATURAL HISTORY SUMMARY

Compiled by Alpine Animal Control / Equalizer Wildlife Services (4/2009)​

Species	Breeding Season	Gestation	Litters Born	Litter Size (avg)	Young Emerge	Misc
Fox ​Squirrels	Jan. & June	44-45 Days	Feb. & Aug. (2 Litters)	2-6 (3.5)	Apr. & Oct.	Introduced
Rock Squirrels	Apr. - May	30-32 Days (?)	May - June (1 Litter)	3 - 9 (5)	June	Hibernators (Nov. - Mar.)
Striped Skunks	Feb. - Mar.	59-77 Days	May (1 Litter)	2-10 (7)	June	Value
Raccoons	Jan. - Feb.	63-65 Days	April (1 Litter)	1-8 (4)	June	Invasive
Cottontail Rabbits	Feb. - Aug.	28 Days	Mar. - Aug. (3-5 Litters)	2-7 (4)	Mar. - Aug.
Packrats (Woodrats)	May - July (?)	32-38 Days	June - Aug. (1-3 Litters)	1-6 (3)	July - Sept. (?)
Bats (Little & Big Brown)	Oct. - Nov. (?)	50-60 Days	May - June	1 (1)	July - Aug.	Hibernate or Migrate (Oct. - Apr.)
Meadow Voles	Feb. - Sept.	21 Days	Mar. - Sept. (3-6 Litters)	1-11 (5)	Mar. - Oct. (?)	Active Year-Round
Pocket Gophers	May - June	18-19 Days	June - July (1 Litter)	4-6 (5)	July - Aug	Active Year-Round
13-Lined Ground Squirrels	Apr. - May	27-28 Days	May - June (1 Litter)	6-9 (8)	June - July	Hibernates (Nov. - Mar.)
Red Foxes	Jan. - Feb.	52 Days	Mar. (1 Litter)	1-10 (4.5)	April	Introduced
Coyotes	Feb.	63 Days	Apr. - May (1 Litter)	1-8 (5.5)	May
Black-Tailed Prairie Dogs	Feb. - Mar.	30-35 Days	Mar. - Apr. (1 Litter)	1-8 (4.5)	May - June	Highly Colonial
Mule Deer	Nov. - Dec.	203 Days	June (1 Litter)	1-2 (1.5)	June

Common Nuisance Birds  
                  

• Northern flicker woodpeckers
• Pigeons (rock doves)
• Nuthatches
• House finches
• English sparrows
• Resident Canada geese

Common Nuisance Reptiles

• Garter snakes
• Prairie (western) rattlesnakes
• Bull snakes
• Fence lizards (Swifts)

Other Nuisance Mammals
​

• Porcupines
• Gunnison prairie dogs
• Long-tailed weasels
• Various chipmunks
• Spotted skunks (civets)
• Pine squirrels (chickarees)
• Ringtails
• Mountain lions
• Beavers
• Black bears