WhenToBird

American Robin · Turdus migratorius

When Do Robins Arrive in Idaho?

Adult male American Robin
Photo: northerly, CC BY 4.0 via iNaturalist

American Robins are in Idaho all year, but most are here in spring: numbers build from mid March, peak in mid June (64% of checklists), and fall back by late July. In the quietest week (the second week of January) they are still on about 25% of checklists.

When to look

Numbers buildMar 15-21mid March
PeakJun 15-21mid June
Fall back byJul 22-31late July
FewestJan 8-14the second week of January

Best: mid June. Here all year; numbers build from mid March and fall back by late July. Peak: on about 64% of Idaho checklists.

  1. Jancommon
  2. Febcommon
  3. Marpeak season
  4. Aprpeak season
  5. Maypeak season
  6. Junpeak season
  7. Julpeak season
  8. Augcommon
  9. Sepcommon
  10. Octcommon
  11. Novcommon
  12. Deccommon

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

Robins in Idaho, species by species

SpeciesFirst arrivalsCommon byPeakMost gone byPeak %
American RobinMar 15-21Mar 15-21Jun 15-21Jul 22-3164%
0%20%40%60%80%American RobinJanFebMarAprMayJunJulAugSepOctNovDec
  • 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 Idaho 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 Idaho

Best counties for American Robin

Share of checklists at the peak
  1. Adams CountyBest late June · 193 checklists that week, 5,826 in all89%
  2. Clearwater CountyBest the second week of June · 33 checklists that week, 1,909 in all89%
  3. Lewis CountyBest late June · 26 checklists that week, 603 in all87%
  4. Teton CountyBest early June · 206 checklists that week, 6,406 in all83%
  5. Madison CountyBest mid June · 80 checklists that week, 3,887 in all82%
  6. Minidoka CountyBest the second week of May · 28 checklists that week, 1,365 in all78%

Common questions

When do robins arrive in Idaho?
American Robins are in Idaho all year, but most are here in spring: numbers build from mid March, peak in mid June (64% of checklists), and fall back by late July. In the quietest week (the second week of January) they are still on about 25% of checklists.
When do robins leave Idaho?
American Robins never fully leave Idaho: numbers fall back below half their usual rate by late July, but some are still reported in every week, about 25% of checklists at the low.
When is the best time to see robins in Idaho?
The American Robin is reported most often in mid June, on about 64% of Idaho checklists.