When do ospreys leave South Dakota?

Most Ospreys have left South Dakota by the second week of October, when reports fall below half their usual rate. Stragglers are still reported until mid October.

When is the best time to see ospreys in South Dakota?

The Osprey is reported most often in early September, on about 6.5% of South Dakota checklists.

Osprey · Pandion haliaetus

When Do Ospreys Arrive in South Dakota?

Photo: Bill Levine, CC BY 4.0 via iNaturalist

Ospreys reach South Dakota in early April, are common by the second week of April, peak in early September (6.5% of checklists), and most are gone by the second week of October.

When to look

First arrivalsApr 1-7early April

Common byApr 8-14the second week of April

PeakSep 1-7early September

Most gone byOct 8-14the second week of October

Best: early September. First arrivals early April; most are gone by the second week of October. Peak: on about 6.5% of South Dakota checklists.

Jannot usually seen
Febnot usually seen
Marrare
Aprpeak season
Maycommon
Juncommon
Julpeak season
Augpeak season
Seppeak season
Octcommon
Novrare
Decnot usually seen

Darker months: more checklists report it. Outlined: peak month.

Ospreys in South Dakota, species by species

Species	First arrivals	Common by	Peak	Most gone by	Peak %
Osprey	Apr 1-7	Apr 8-14	Sep 1-7	Oct 8-14	6.5%

Osprey

Share of complete checklists reporting each species, by week (4 per month). Gaps: fewer than 10 checklists that week.

Frequency is the share of complete checklists in South Dakota that listed the bird, 2016–2025. It is not a head count, and it follows where and when people go birding. How to read it.

Where in South Dakota

Best counties for Osprey

Share of checklists at the peak

Pennington CountyBest mid April · 209 checklists that week, 12,603 in all27%
Yankton CountyBest early October · 32 checklists that week, 3,895 in all18%
Lawrence CountyBest late April · 61 checklists that week, 3,847 in all18%
Fall River CountyBest late April · 128 checklists that week, 3,040 in all14%
Custer CountyBest mid August · 214 checklists that week, 7,902 in all12%
Stanley CountyBest mid April · 72 checklists that week, 2,615 in all12%

Common questions

When do ospreys arrive in South Dakota?: Ospreys reach South Dakota in early April, are common by the second week of April, peak in early September (6.5% of checklists), and most are gone by the second week of October.
When do ospreys leave South Dakota?: Most Ospreys have left South Dakota by the second week of October, when reports fall below half their usual rate. Stragglers are still reported until mid October.
When is the best time to see ospreys in South Dakota?: The Osprey is reported most often in early September, on about 6.5% of South Dakota checklists.