WhenToBird

Poecile gambeli · Paridae

When Do Mountain Chickadees Arrive in Utah?

Adult Mountain Chickadee
Photo: Wendy McCrady, CC BY 4.0 via iNaturalist

Mountain Chickadees are in Utah all year, but most are here in summer: numbers build from mid June, peak in late July (13% of checklists), and fall back by early November. In the quietest week (the second week of May) they are still on about 3.2% of checklists.

When to look

Numbers buildJun 15-21mid June
PeakJul 22-31late July
Fall back byNov 1-7early November
FewestMay 8-14the second week of May

Best: late July. Here all year; numbers build from mid June and fall back by early November. Peak: on about 13% of Utah checklists.

  1. Jancommon
  2. Febcommon
  3. Marcommon
  4. Apruncommon
  5. Mayuncommon
  6. Junpeak season
  7. Julpeak season
  8. Augpeak season
  9. Sepcommon
  10. Octpeak season
  11. Novcommon
  12. Deccommon

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

0%5%10%15%Jan 1-7: 6.0% of 10857 checklistsJan 8-14: 6.7% of 8333 checklistsJan 15-21: 6.0% of 8360 checklistsJan 22-31: 6.3% of 10516 checklistsFeb 1-7: 5.3% of 7416 checklistsFeb 8-14: 6.1% of 8082 checklistsFeb 15-21: 5.4% of 9643 checklistsFeb 22-28: 6.4% of 7960 checklistsMar 1-7: 6.0% of 7998 checklistsMar 8-14: 5.9% of 8581 checklistsMar 15-21: 6.1% of 8637 checklistsMar 22-31: 5.5% of 13006 checklistsApr 1-7: 4.6% of 10562 checklistsApr 8-14: 3.9% of 11694 checklistsApr 15-21: 4.2% of 11382 checklistsApr 22-30: 3.1% of 16626 checklistsMay 1-7: 3.3% of 13523 checklistsMay 8-14: 3.2% of 14714 checklistsMay 15-21: 3.0% of 13711 checklistsMay 22-31: 4.2% of 16546 checklistsJun 1-7: 5.7% of 10284 checklistsJun 8-14: 6.3% of 9530 checklistsJun 15-21: 7.8% of 8854 checklistsJun 22-30: 9.8% of 10566 checklistsJul 1-7: 11% of 7987 checklistsJul 8-14: 12% of 7471 checklistsJul 15-21: 13% of 7240 checklistsJul 22-31: 12% of 9329 checklistsAug 1-7: 12% of 6521 checklistsAug 8-14: 12% of 6423 checklistsAug 15-21: 12% of 6208 checklistsAug 22-31: 9.9% of 9089 checklistsSep 1-7: 9.4% of 7081 checklistsSep 8-14: 8.6% of 7306 checklistsSep 15-21: 8.9% of 7208 checklistsSep 22-30: 9.3% of 8876 checklistsOct 1-7: 9.0% of 7265 checklistsOct 8-14: 9.8% of 7226 checklistsOct 15-21: 9.7% of 7007 checklistsOct 22-31: 8.6% of 8443 checklistsNov 1-7: 7.8% of 6711 checklistsNov 8-14: 7.5% of 6290 checklistsNov 15-21: 7.4% of 6169 checklistsNov 22-30: 7.0% of 8228 checklistsDec 1-7: 6.6% of 6011 checklistsDec 8-14: 6.4% of 6044 checklistsDec 15-21: 6.7% of 6721 checklistsDec 22-31: 6.1% of 9982 checklistsJanFebMarAprMayJunJulAugSepOctNovDec
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 Utah 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
Second week of November

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.

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Where in Utah

Best counties

Share of checklists at the peak
  1. Daggett CountyBest late January · 14 checklists that week, 1,885 in all51%
  2. Duchesne CountyBest early August · 68 checklists that week, 2,692 in all43%
  3. Kane CountyBest mid August · 139 checklists that week, 6,105 in all43%
  4. Beaver CountyBest mid August · 103 checklists that week, 6,956 in all38%
  5. Garfield CountyBest early December · 60 checklists that week, 10,367 in all37%
  6. Piute CountyBest the second week of July · 21 checklists that week, 1,035 in all34%

Best spots

Share of checklists at the peak
  1. Silver Lake (Giles Flat)Salt Lake County, best mid September · 30 checklists that week, 278 in all95%
  2. Lake SolitudeSalt Lake County, best late July · 20 checklists that week, 171 in all90%
  3. Collins GulchSalt Lake County, best early March · 54 checklists that week, 1,774 in all85%
  4. Hidden LakeWeber County, best mid March · 20 checklists that week, 466 in all84%
  5. Zion National Park (Goose Creek Knoll)Washington County, best late August · 30 checklists that week, 299 in all84%
  6. Silver LakeSalt Lake County, best the second week of August · 68 checklists that week, 1,026 in all78%

Busy spots report more of everything; compare the checklist counts before you drive anywhere.

Best time of day

In Utah, the Mountain Chickadee is most often listed on checklists started between 9 and 11 am (8.4% of those checklists).

0%5%10%12 am: too few checklists (242) to judge1 am: too few checklists (178) to judge2 am: too few checklists (169) to judge3 am: too few checklists (162) to judge4 am: too few checklists (284) to judge5 am: too few checklists (1984) to judge6 am: 8.0% of 11714 checklists7 am: 7.3% of 33209 checklists8 am: 8.1% of 46944 checklists9 am: 8.5% of 46290 checklists10 am: 8.3% of 43144 checklists11 am: 8.0% of 36893 checklists12 pm: 6.9% of 32758 checklists1 pm: 7.4% of 30142 checklists2 pm: 6.8% of 29414 checklists3 pm: 6.0% of 29491 checklists4 pm: 4.9% of 29154 checklists5 pm: 4.5% of 22256 checklists6 pm: 4.7% of 17383 checklists7 pm: 3.4% of 13099 checklists8 pm: too few checklists (6647) to judge9 pm: too few checklists (1753) to judge10 pm: too few checklists (599) to judge11 pm: too few checklists (307) to judge12a3a6a9a12p3p6p9p
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
MonthDays 1-78-1415-2122-end
January6.0%6.7%6.0%6.3%
February5.3%6.1%5.4%6.4%
March6.0%5.9%6.1%5.5%
April4.6%3.9%4.2%3.1%
May3.3%3.2%3.0%4.2%
June5.7%6.3%7.8%9.8%
July11%12%13%12%
August12%12%12%9.9%
September9.4%8.6%8.9%9.3%
October9.0%9.8%9.7%8.6%
November7.8%7.5%7.4%7.0%
December6.6%6.4%6.7%6.1%

Neighboring states

  • Wyoming: arrives the second week of July, 3 weeks later than Utah
  • Nevada: year-round, peaks early July
  • Colorado: year-round, peaks early August
  • Idaho: arrives mid June, in the same week than Utah

Common questions

When do Mountain Chickadees arrive in Utah?
Mountain Chickadees are in Utah all year, but most are here in summer: numbers build from mid June, peak in late July (13% of checklists), and fall back by early November. In the quietest week (the second week of May) they are still on about 3.2% of checklists.
When do Mountain Chickadees leave Utah?
Mountain Chickadees never fully leave Utah: numbers fall back below half their usual rate by early November, but some are still reported in every week, about 3.2% of checklists at the low.
When is the best time to see a Mountain Chickadee in Utah?
The Mountain Chickadee is reported most often in late July, on about 13% of Utah checklists.
Where in Utah are Mountain Chickadees seen most often?
By county, Daggett County, Duchesne County, and Kane County have the highest peak reporting rates for the Mountain Chickadee (counties with at least 200 checklists).