Marymoor Animal Sightings
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| Beaver at the Rowing Club Pond. Photo by Ollie Oliver | Female Hooded Merganser
with Red-eared Sliders and Painted Turtle (closest). Photo by Ollie Oliver. |
Since about 1998, I've been noting the mammals, reptiles, and amphibians observed at Marymoor during my weekly birding surveys. This list is not as rigorous as my bird list, and my identification skills do not allow me to list all of the mammals smaller than a chipmunk. I'm afraid I haven't kept a list of insects or slugs, etc. The following table shows the number of times we've seen various species in each month of the year.
| SPECIES | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | TOTAL | |
| Black-tailed Deer | 1 | 6 | 5 | 3 | 2 | 3 | 1 | 3 | 3 | 27 | ||||
| Long-tailed Weasel | 3 | 4 | 3 | 1 | 9 | 8 | 5 | 6 | 4 | 3 | 2 | 48 | ||
| American Mink | 1 | 2 | 3 | |||||||||||
| Northern River Otter | 5 | 1 | 1 | 4 | 1 | 3 | 4 | 1 | 2 | 1 | 1 | 7 | 31 | |
| Northern Raccoon | 1 | 1 | 2 | 2 | 4 | 3 | 3 | 1 | 17 | |||||
| Coyote | 3 | 4 | 2 | 1 | 1 | 3 | 3 | 1 | 18 | |||||
| Common Muskrat | 8 | 6 | 10 | 8 | 10 | 13 | 8 | 10 | 5 | 4 | 5 | 2 | 89 | |
| American Beaver | 2 | 2 | 1 | 1 | 1 | 7 | ||||||||
| Mountain Beaver | 1 | 1 | ||||||||||||
| Townsend's Chipmunk | 1 | 1 | ||||||||||||
| Eastern Gray Squirrel (I) | 21 | 19 | 28 | 30 | 28 | 24 | 18 | 29 | 27 | 29 | 22 | 20 | 295 | |
| Northern Flying Squirrel | 1 | 1 | ||||||||||||
| Eastern Cottontail (I) | 3 | 3 | 4 | 8 | 10 | 16 | 13 | 13 | 10 | 6 | 1 | 2 | 89 | |
| Virginia Opossum (I) | 1 | 1 | 1 | 3 | ||||||||||
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Various bats, moles, mice shrew-moles, rats, etc. |
1 | 6 | 4 | 1 | 1 | 1 | 14 | |||||||
| Long-tailed Vole | 1 | |||||||||||||
| Painted Turtle (I) | 1 | 2 | 10 | 22 | 16 | 10 | 10 | 13 | 17 | 6 | 1 | 108 | ||
| Red-eared Slider (I) | 2 | 7 | 16 | 13 | 6 | 6 | 8 | 14 | 8 | 3 | 1 | 84 | ||
| Bullfrog (I) | 2 | 2 | 6 | 12 | 13 | 11 | 2 | 1 | 49 | |||||
| Pacific Tree Frog | 4 | 4 | 1 | 9 | ||||||||||
| Garter Snake | 9 | 11 | 9 | 8 | 4 | 14 | 14 | 7 | 76 | |||||
| Invertebrates | ||||||||||||||
| Total by month | 43 | 47 | 86 | 116 | 120 | 109 | 88 | 113 | 98 | 71 | 41 | 37 | 969 | |
| (I) Introduced | ||||||||||||||