Yellow-rumped Warblers are winter birds in Indiana: the first arrive in early September, they are common by mid September, peak in the second week of October (37% of checklists), and most are gone by mid May.
When to look
First arrivalsSep 1-7early September
Common bySep 15-21mid September
PeakOct 8-14the second week of October
Most gone byMay 15-21mid May
Best: the second week of October. First arrivals early September; most are gone by mid May. Peak: on about 37% of Indiana checklists.
Janrare
Febrare
Maruncommon
Aprpeak season
Maycommon
Junnot usually seen
Julnot usually seen
Augnot usually seen
Sepcommon
Octpeak season
Novcommon
Decrare
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 Indiana 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.
Busy spots report more of everything; compare the checklist counts before you drive anywhere.
Best time of day
In Indiana, the Yellow-rumped Warbler is most often listed on checklists started between 6 and 8 am (13% 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
2.4%
2.3%
2.2%
2.4%
February
2.3%
2.0%
1.9%
2.2%
March
2.5%
2.7%
3.5%
5.3%
April
11%
20%
28%
30%
May
31%
19%
6.3%
0.5%
June
0.1%
0%
0%
0%
July
0%
0%
0.1%
0%
August
0%
0%
0%
0.3%
September
1.2%
2.4%
4.8%
17%
October
30%
41%
40%
30%
November
16%
8.1%
5.0%
4.0%
December
3.0%
3.1%
3.8%
2.9%
Neighboring states
Illinois: arrives late August, 1 week earlier than Indiana
Kentucky: arrives mid September, 2 weeks later than Indiana
Ohio: arrives early September, in the same week than Indiana
Michigan: arrives late March, 21 weeks earlier than Indiana
Common questions
When do Yellow-rumped Warblers arrive in Indiana?
Yellow-rumped Warblers are winter birds in Indiana: the first arrive in early September, they are common by mid September, peak in the second week of October (37% of checklists), and most are gone by mid May.
When do Yellow-rumped Warblers leave Indiana?
Most Yellow-rumped Warblers have left Indiana by mid May, when reports fall below half their usual rate. Stragglers are still reported until late May.
When is the best time to see a Yellow-rumped Warbler in Indiana?
The Yellow-rumped Warbler is reported most often in the second week of October, on about 37% of Indiana checklists.
Where in Indiana are Yellow-rumped Warblers seen most often?
By county, Blackford County, Morgan County, and Dearborn County have the highest peak reporting rates for the Yellow-rumped Warbler (counties with at least 200 checklists).