When do robins leave Pennsylvania?

American Robins never fully leave Pennsylvania: numbers fall back below half their usual rate by the second week of August, but some are still reported in every week, about 19% of checklists at the low.

When is the best time to see robins in Pennsylvania?

The American Robin is reported most often in late April, on about 76% of Pennsylvania checklists.

American Robin · Turdus migratorius

When Do Robins Arrive in Pennsylvania?

Photo: northerly, CC BY 4.0 via iNaturalist

American Robins are in Pennsylvania all year, but most are here in spring: numbers build from the second week of March, peak in late April (76% 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 19% of checklists.

When to look

Numbers buildMar 8-14the second week of March

PeakApr 22-30late April

Fall back byAug 8-14the second week of August

FewestJan 8-14the second week of January

Best: late April. Here all year; numbers build from the second week of March and fall back by the second week of August. Peak: on about 76% of Pennsylvania checklists.

Januncommon
Febcommon
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 Pennsylvania, species by species

Species	First arrivals	Common by	Peak	Most gone by	Peak %
American Robin	Mar 8-14	Mar 8-14	Apr 22-30	Aug 8-14	76%

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 Pennsylvania 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 Pennsylvania

Best counties for American Robin

Share of checklists at the peak

Philadelphia CountyBest mid April · 2846 checklists that week, 96,503 in all86%
Beaver CountyBest the second week of May · 324 checklists that week, 8,775 in all85%
Greene CountyBest late June · 109 checklists that week, 2,997 in all85%
Northampton CountyBest late June · 800 checklists that week, 45,480 in all85%
Washington CountyBest late June · 520 checklists that week, 23,823 in all84%
Delaware CountyBest early June · 1560 checklists that week, 76,406 in all84%

Common questions

When do robins arrive in Pennsylvania?: American Robins are in Pennsylvania all year, but most are here in spring: numbers build from the second week of March, peak in late April (76% 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 19% of checklists.
When do robins leave Pennsylvania?: American Robins never fully leave Pennsylvania: numbers fall back below half their usual rate by the second week of August, but some are still reported in every week, about 19% of checklists at the low.
When is the best time to see robins in Pennsylvania?: The American Robin is reported most often in late April, on about 76% of Pennsylvania checklists.