WhenToBird

Poecile gambeli · Paridae

When Do Mountain Chickadees Arrive in Washington?

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

The Mountain Chickadee is in Washington all year. It turns up on about 2.7% of checklists at its peak (late June) and on 1.6% in its quietest week (early December).

When to look

PresentAll year
Peak weekJun 22-30late June
Quietest weekDec 1-7early December

Best: late June. Here all year. Peak: on about 2.7% of Washington checklists.

  1. Jancommon
  2. Febcommon
  3. Marcommon
  4. Aprcommon
  5. Maypeak season
  6. Junpeak season
  7. Julpeak season
  8. Augpeak season
  9. Seppeak season
  10. Octpeak season
  11. Novcommon
  12. Deccommon

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

0%1%2%3%Jan 1-7: 1.7% of 41928 checklistsJan 8-14: 1.7% of 31152 checklistsJan 15-21: 1.8% of 31753 checklistsJan 22-31: 1.5% of 42530 checklistsFeb 1-7: 1.6% of 29739 checklistsFeb 8-14: 1.8% of 32746 checklistsFeb 15-21: 1.8% of 40328 checklistsFeb 22-28: 1.9% of 28432 checklistsMar 1-7: 1.7% of 30758 checklistsMar 8-14: 1.6% of 29368 checklistsMar 15-21: 1.7% of 32580 checklistsMar 22-31: 1.7% of 45614 checklistsApr 1-7: 1.6% of 33997 checklistsApr 8-14: 1.7% of 34729 checklistsApr 15-21: 1.7% of 38474 checklistsApr 22-30: 1.8% of 52185 checklistsMay 1-7: 1.8% of 44236 checklistsMay 8-14: 2.0% of 48708 checklistsMay 15-21: 2.1% of 41742 checklistsMay 22-31: 2.3% of 57082 checklistsJun 1-7: 2.2% of 39193 checklistsJun 8-14: 2.4% of 36042 checklistsJun 15-21: 2.8% of 34003 checklistsJun 22-30: 2.8% of 39711 checklistsJul 1-7: 2.5% of 31949 checklistsJul 8-14: 2.3% of 29086 checklistsJul 15-21: 2.5% of 28045 checklistsJul 22-31: 2.4% of 38275 checklistsAug 1-7: 2.2% of 28846 checklistsAug 8-14: 2.3% of 28036 checklistsAug 15-21: 2.0% of 27614 checklistsAug 22-31: 2.2% of 40356 checklistsSep 1-7: 1.9% of 31214 checklistsSep 8-14: 1.8% of 27795 checklistsSep 15-21: 2.3% of 29677 checklistsSep 22-30: 2.1% of 35241 checklistsOct 1-7: 2.0% of 28605 checklistsOct 8-14: 2.1% of 28655 checklistsOct 15-21: 1.9% of 24643 checklistsOct 22-31: 1.7% of 34874 checklistsNov 1-7: 1.5% of 25658 checklistsNov 8-14: 1.4% of 25700 checklistsNov 15-21: 1.8% of 24331 checklistsNov 22-30: 1.7% of 32784 checklistsDec 1-7: 1.4% of 24099 checklistsDec 8-14: 1.5% of 23339 checklistsDec 15-21: 1.8% of 27666 checklistsDec 22-31: 1.6% of 42130 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 Washington 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 Washington

Best counties

Share of checklists at the peak
  1. Ferry CountyBest the second week of December · 54 checklists that week, 5,106 in all59%
  2. Stevens CountyBest mid December · 62 checklists that week, 7,596 in all33%
  3. Garfield CountyBest the second week of July · 16 checklists that week, 1,130 in all31%
  4. Spokane CountyBest late November · 898 checklists that week, 43,379 in all28%
  5. Pend Oreille CountyBest early February · 17 checklists that week, 3,664 in all28%
  6. Okanogan CountyBest early August · 277 checklists that week, 23,048 in all23%

Best spots

Share of checklists at the peak
  1. Kamiak Butte County ParkWhitman County, best late August · 24 checklists that week, 473 in all72%
  2. Holmburg Conservation AreaSpokane County, best late September · 27 checklists that week, 462 in all67%
  3. Washington PassChelan County, best late May · 20 checklists that week, 224 in all64%
  4. Fields SpringAsotin County, best mid May · 25 checklists that week, 213 in all63%
  5. Washington State Department of Natural Resources (WADNR) State Resource Management Area (Dry Creek)Yakima County, best early May · 24 checklists that week, 617 in all61%
  6. Riverfront ParkSpokane County, best early December · 37 checklists that week, 752 in all60%

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

Best time of day

In Washington, the Mountain Chickadee is most often listed on checklists started between 6 and 8 am (2.8% of those checklists).

0%1%2%3%4%12 am: too few checklists (796) to judge1 am: too few checklists (776) to judge2 am: too few checklists (709) to judge3 am: too few checklists (901) to judge4 am: too few checklists (3221) to judge5 am: too few checklists (16576) to judge6 am: 3.2% of 56744 checklists7 am: 2.7% of 133294 checklists8 am: 2.3% of 184196 checklists9 am: 2.2% of 186303 checklists10 am: 2.1% of 177063 checklists11 am: 1.9% of 154936 checklists12 pm: 1.6% of 138061 checklists1 pm: 1.6% of 127449 checklists2 pm: 1.5% of 121511 checklists3 pm: 1.4% of 107793 checklists4 pm: 1.3% of 82862 checklists5 pm: 1.4% of 57183 checklists6 pm: 1.3% of 39886 checklists7 pm: too few checklists (26969) to judge8 pm: too few checklists (12427) to judge9 pm: too few checklists (3658) to judge10 pm: too few checklists (1500) to judge11 pm: too few checklists (834) 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
January1.7%1.7%1.8%1.5%
February1.6%1.8%1.8%1.9%
March1.7%1.6%1.7%1.7%
April1.6%1.7%1.7%1.8%
May1.8%2.0%2.1%2.3%
June2.2%2.4%2.8%2.8%
July2.5%2.3%2.5%2.4%
August2.2%2.3%2.0%2.2%
September1.9%1.8%2.3%2.1%
October2.0%2.1%1.9%1.7%
November1.5%1.4%1.8%1.7%
December1.4%1.5%1.8%1.6%

Neighboring states

  • Oregon: year-round, peaks late June
  • Idaho: all year, most in fall, peaks late July
  • Montana: year-round, peaks mid December
  • Nevada: year-round, peaks early July

Common questions

When do Mountain Chickadees arrive in Washington?
The Mountain Chickadee is in Washington all year. It turns up on about 2.7% of checklists at its peak (late June) and on 1.6% in its quietest week (early December).
When do Mountain Chickadees leave Washington?
The Mountain Chickadee does not leave Washington: it is reported all year, from 1.6% of checklists in early December to 2.7% in late June.
When is the best time to see a Mountain Chickadee in Washington?
The Mountain Chickadee is reported most often in late June, on about 2.7% of Washington checklists.
Where in Washington are Mountain Chickadees seen most often?
By county, Ferry County, Stevens County, and Garfield County have the highest peak reporting rates for the Mountain Chickadee (counties with at least 200 checklists).