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 | |
| Common Opossum (I) | 2 | 1 | 1 | 1 | 5 | |||||||||
| Townsend's Mole | ? | |||||||||||||
| Coyote | 1 | 4 | 4 | 3 | 3 | 1 | 1 | 3 | 4 | 3 | 2 | 29 | ||
| River Otter | 6 | 1 | 3 | 2 | 1 | 3 | 7 | 3 | 3 | 3 | 4 | 9 | 45 | |
| Long-tailed Weasel | 3 | 4 | 3 | 3 | 8 | 14 | 6 | 7 | 4 | 3 | 2 | 57 | ||
| Mink | 1 | 1 | 3 | 5 | ||||||||||
| Raccoon | 2 | 2 | 3 | 4 | 1 | 5 | 5 | 2 | 2 | 26 | ||||
| Mule Deer | 2 | 6 | 6 | 4 | 7 | 5 | 7 | 4 | 4 | 45 | ||||
| Mountain Beaver | 1 | 1 | ||||||||||||
| Eastern Gray Squirrel (I) | 32 | 24 | 35 | 31 | 30 | 30 | 26 | 36 | 34 | 37 | 34 | 28 | 377 | |
| Townsend's Chipmunk | 1 | 1 | ||||||||||||
| Northern Flying Squirrel | 1 | 1 | ||||||||||||
| Beaver | 2 | 1 | 3 | 2 | 2 | 1 | 13 | |||||||
| Long-tailed Vole | ? | ? | 1 | ? | 1 | |||||||||
| Muskrat | 8 | 6 | 11 | 8 | 10 | 13 | 11 | 11 | 5 | 4 | 5 | 2 | 94 | |
| Black Rat ? | ? | |||||||||||||
| Black-tailed Jackrabbit ? | ? | |||||||||||||
| Eastern Cottontail (I) | 8 | 6 | 7 | 12 | 16 | 21 | 20 | 19 | 16 | 10 | 4 | 5 | 144 | |
| Pacific Tree Frog | 2 | 5 | 1 | 8 | ||||||||||
| Bullfrog (I) | 3 | 2 | 6 | 15 | 14 | 14 | 2 | 57 | ||||||
| Painted Turtle (I) | 1 | 3 | 7 | 16 | 17 | 11 | 10 | 12 | 13 | 4 | 94 | |||
| Red-eared Slider (I) | 3 | 9 | 15 | 18 | 11 | 9 | 12 | 20 | 9 | 4 | 1 | 111 | ||
| Northwestern Garter Snake | 9 | 10 | 12 | 11 | 6 | 15 | 6 | 8 | 1 | 78 | ||||
| Total by month | 59 | 57 | 102 | 116 | 134 | 138 | 125 | 143 | 115 | 89 | 59 | 50 | 1187 | |
| (I) Introduced | ||||||||||||||