There are 75 recorded sightings of River Otter in Illinois, with 11 observations documented in the past 12 months. Local sightings are most frequently reported in December through March.
When to See River Otter in Illinois
Most often reported in December through March.
| Month | Recorded Sightings | Peak Month |
|---|---|---|
| January | 5 | Yes |
| February | 12 | Yes |
| March | 13 | Yes |
| April | 0 | No |
| May | 7 | No |
| June | 6 | No |
| July | 5 | No |
| August | 5 | No |
| September | 5 | No |
| October | 5 | No |
| November | 0 | No |
| December | 6 | Yes |
Compared With Other Regions
Explore how River Otter sightings in Illinois compare to other North American hubs:
A sleek, semiaquatic mammal with dense brown fur, a long, tapering tail, webbed feet and a small, rounded head. It lives in rivers, lakes, marshes and coasts across Canada and the United States, eating fish, crayfish and frogs. It loves to play, sliding down muddy and snowy banks. Watch for it at dawn or dusk, and look for slides, tracks and scat piles at waterside logs.
Other Wildlife to Look for in Illinois
Track River Otter in Illinois
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Frequently Asked Questions
When is the best time to see a River Otter in Illinois?
River Otter is most often reported in Illinois in December through March, based on GBIF records. Reports partly reflect when more people are outdoors, so sightings in other months are possible.
Where can I see a River Otter in Illinois?
There are 75 documented River Otter records in Illinois. Parks, refuges and protected areas with suitable habitat are the best places to start; the charts above show when it's reported most.
How can I find River Otter sightings near me in Illinois?
Use the WildMap app on iOS to see recent reports within 100 km from the past 7 days for free (WildMap Pro: 200 km and 30 days), and turn on alerts for sightings near you in Illinois.