When do robins leave Wisconsin?

American Robins never fully leave Wisconsin: numbers fall back below half their usual rate by the second week of August, but some are still reported in every week, about 8.0% of checklists at the low.

When is the best time to see robins in Wisconsin?

The American Robin is reported most often in the second week of May, on about 73% of Wisconsin checklists.

American Robin · Turdus migratorius

When Do Robins Arrive in Wisconsin?

Photo: northerly, CC BY 4.0 via iNaturalist

American Robins are in Wisconsin all year, but most are here in spring: numbers build from the second week of March, peak in the second week of May (73% of checklists), and fall back by the second week of August. In the quietest week (the second week of January) they are still on about 8.0% of checklists.

When to look

Numbers buildMar 8-14the second week of March

PeakMay 8-14the second week of May

Fall back byAug 8-14the second week of August

FewestJan 8-14the second week of January

Best: the second week of May. Here all year; numbers build from the second week of March and fall back by the second week of August. Peak: on about 73% of Wisconsin checklists.

Janrare
Febuncommon
Marpeak season
Aprpeak season
Maypeak season
Junpeak season
Julpeak season
Augcommon
Sepcommon
Octcommon
Novcommon
Decuncommon

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

Robins in Wisconsin, species by species

Species	First arrivals	Common by	Peak	Most gone by	Peak %
American Robin	Mar 8-14	Mar 8-14	May 8-14	Aug 8-14	73%

American Robin

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 Wisconsin 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 Wisconsin

Best counties for American Robin

Share of checklists at the peak

Green CountyBest the second week of July · 98 checklists that week, 4,387 in all85%
Ozaukee CountyBest early July · 631 checklists that week, 38,294 in all84%
La Crosse CountyBest the second week of May · 832 checklists that week, 15,788 in all84%
Rock CountyBest the second week of June · 324 checklists that week, 15,236 in all84%
Winnebago CountyBest mid June · 406 checklists that week, 26,460 in all84%
Milwaukee CountyBest early June · 1751 checklists that week, 114,667 in all83%

Common questions

When do robins arrive in Wisconsin?: American Robins are in Wisconsin all year, but most are here in spring: numbers build from the second week of March, peak in the second week of May (73% of checklists), and fall back by the second week of August. In the quietest week (the second week of January) they are still on about 8.0% of checklists.
When do robins leave Wisconsin?: American Robins never fully leave Wisconsin: numbers fall back below half their usual rate by the second week of August, but some are still reported in every week, about 8.0% of checklists at the low.
When is the best time to see robins in Wisconsin?: The American Robin is reported most often in the second week of May, on about 73% of Wisconsin checklists.