Yellow-billed Cuckoos arrive in South Dakota in late May, peak in mid June (2.0% of checklists), and most are gone by mid August.
When to look
First arrivalsMay 22-31late May
Common byMay 22-31late May
PeakJun 15-21mid June
Most gone byAug 15-21mid August
Best: mid June. First arrivals late May; most are gone by mid August. Peak: on about 2.0% of South Dakota checklists.
Jannot usually seen
Febnot usually seen
Marnot usually seen
Aprnot usually seen
Maycommon
Junpeak season
Julpeak season
Augcommon
Sepuncommon
Octnot usually seen
Novnot usually seen
Decnot usually seen
Darker months: more checklists report it. Outlined: peak month.
Share of complete checklists reporting it, by week (4 per month). Grey bars: fewer than 10 checklists, not counted.
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.
JanFebMarAprMayJunJulAugSepOctNovDec
today
0%few checklistsno data
Each county is shaded by the share of complete checklists there that listed the bird, blended with the weeks either side. Darker is more often. It follows where people watch birds, not how many birds there are. How to read it.
Newton HillsLincoln County, best mid May · 40 checklists that week, 181 in all7.6%
Sica HollowRoberts County, best late May · 25 checklists that week, 189 in all7.5%
Busy spots report more of everything; compare the checklist counts before you drive anywhere.
Best time of day
In South Dakota, the Yellow-billed Cuckoo is most often listed on checklists started between 6 and 8 am (1.2% of those checklists).
Share of checklists started in each local hour that reported it. It reflects when people go birding as well as when birds are active. Grey hours have too few checklists (under 2% of the state’s, or under 200) to judge.Week-by-week table
Month
Days 1-7
8-14
15-21
22-end
January
0%
0%
0%
0%
February
0%
0%
0%
0%
March
0%
0%
0%
0%
April
0%
0%
0%
0%
May
0%
0.1%
0.3%
1.1%
June
1.5%
2.0%
2.0%
2.0%
July
1.7%
2.0%
1.6%
1.5%
August
1.2%
0.9%
0.8%
0.6%
September
0.3%
0.1%
0.2%
0%
October
0%
0%
0%
0%
November
0.1%
0%
0%
0%
December
0%
0%
0%
0%
Neighboring states
Nebraska: arrives the second week of May, 2 weeks earlier than South Dakota
Minnesota: arrives mid May, 1 week earlier than South Dakota
Iowa: arrives the second week of May, 2 weeks earlier than South Dakota
Kansas: arrives early May, 3 weeks earlier than South Dakota
Common questions
When do Yellow-billed Cuckoos arrive in South Dakota?
Yellow-billed Cuckoos arrive in South Dakota in late May, peak in mid June (2.0% of checklists), and most are gone by mid August.
When do Yellow-billed Cuckoos leave South Dakota?
Most Yellow-billed Cuckoos have left South Dakota by mid August, when reports fall below half their usual rate.
When is the best time to see a Yellow-billed Cuckoo in South Dakota?
The Yellow-billed Cuckoo is reported most often in mid June, on about 2.0% of South Dakota checklists.
Where in South Dakota are Yellow-billed Cuckoos seen most often?
By county, Hughes County, Stanley County, and Clay County have the highest peak reporting rates for the Yellow-billed Cuckoo (counties with at least 200 checklists).