WhenToBird

Myiarchus cinerascens · Tyrannidae

When Do Ash-throated Flycatchers Arrive in Arizona?

Adult Ash-throated Flycatcher
Photo: Dan Harville, CC BY-SA 4.0 via iNaturalist

Ash-throated Flycatchers reach Arizona in early March, are common by late March, peak in early July (20% of checklists), and most are gone by late July.

When to look

First arrivalsMar 1-7early March
Common byMar 22-31late March
PeakJul 1-7early July
Most gone byJul 22-31late July

Best: early July. First arrivals early March; most are gone by late July. Peak: on about 20% of Arizona checklists.

  1. Janrare
  2. Febrare
  3. Marcommon
  4. Aprpeak season
  5. Maypeak season
  6. Junpeak season
  7. Julpeak season
  8. Auguncommon
  9. Sepuncommon
  10. Octrare
  11. Novrare
  12. Decrare

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

0%10%20%30%Jan 1-7: 0.9% of 34758 checklistsJan 8-14: 0.9% of 29835 checklistsJan 15-21: 1.0% of 29279 checklistsJan 22-31: 1.0% of 39716 checklistsFeb 1-7: 0.9% of 27299 checklistsFeb 8-14: 1.0% of 28703 checklistsFeb 15-21: 1.0% of 35357 checklistsFeb 22-28: 1.3% of 29889 checklistsMar 1-7: 2.1% of 29932 checklistsMar 8-14: 3.3% of 32982 checklistsMar 15-21: 5.7% of 34731 checklistsMar 22-31: 9.5% of 50213 checklistsApr 1-7: 13% of 35788 checklistsApr 8-14: 16% of 38087 checklistsApr 15-21: 17% of 41520 checklistsApr 22-30: 19% of 55218 checklistsMay 1-7: 19% of 39688 checklistsMay 8-14: 19% of 39398 checklistsMay 15-21: 19% of 29562 checklistsMay 22-31: 19% of 36774 checklistsJun 1-7: 19% of 21313 checklistsJun 8-14: 18% of 19129 checklistsJun 15-21: 19% of 17922 checklistsJun 22-30: 20% of 21188 checklistsJul 1-7: 20% of 17325 checklistsJul 8-14: 20% of 16463 checklistsJul 15-21: 18% of 18642 checklistsJul 22-31: 12% of 31215 checklistsAug 1-7: 7.0% of 28163 checklistsAug 8-14: 5.1% of 31329 checklistsAug 15-21: 4.5% of 23878 checklistsAug 22-31: 3.9% of 28508 checklistsSep 1-7: 3.0% of 20878 checklistsSep 8-14: 2.1% of 19671 checklistsSep 15-21: 2.2% of 19859 checklistsSep 22-30: 1.7% of 25179 checklistsOct 1-7: 1.2% of 19420 checklistsOct 8-14: 0.8% of 21925 checklistsOct 15-21: 0.7% of 20995 checklistsOct 22-31: 0.9% of 29258 checklistsNov 1-7: 0.8% of 21269 checklistsNov 8-14: 0.8% of 22753 checklistsNov 15-21: 0.9% of 21982 checklistsNov 22-30: 1.0% of 29475 checklistsDec 1-7: 1.0% of 20810 checklistsDec 8-14: 1.1% of 22229 checklistsDec 15-21: 1.0% of 25148 checklistsDec 22-31: 1.0% of 39567 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 Arizona 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 Arizona

Best counties

Share of checklists at the peak
  1. La Paz CountyBest early July · 53 checklists that week, 7,279 in all47%
  2. Pinal CountyBest mid June · 305 checklists that week, 40,036 in all31%
  3. Yuma CountyBest late May · 281 checklists that week, 14,687 in all30%
  4. Mohave CountyBest the second week of July · 267 checklists that week, 18,083 in all30%
  5. Yavapai CountyBest early July · 1085 checklists that week, 83,606 in all25%
  6. Gila CountyBest late June · 300 checklists that week, 14,834 in all23%

Best spots

Share of checklists at the peak
  1. RubySanta Cruz County, best early July · 22 checklists that week, 483 in all90%
  2. Coronado National Forest (Road Tank)Cochise County, best early May · 24 checklists that week, 515 in all86%
  3. Elden SpringCoconino County, best late June · 27 checklists that week, 1,786 in all83%
  4. Phoenix South Mountain ParkMaricopa County, best late June · 20 checklists that week, 1,508 in all83%
  5. Isabella Lee Natural PreservePima County, best late April · 43 checklists that week, 799 in all82%
  6. Tonto National Forest (Raccoon Bluff)Maricopa County, best early July · 22 checklists that week, 2,466 in all81%

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

Best time of day

In Arizona, the Ash-throated Flycatcher is most often listed on checklists started between 5 and 7 am (21% of those checklists).

0%10%20%30%12 am: too few checklists (488) to judge1 am: too few checklists (503) to judge2 am: too few checklists (489) to judge3 am: too few checklists (735) to judge4 am: too few checklists (4115) to judge5 am: 27% of 38350 checklists6 am: 19% of 118786 checklists7 am: 11% of 183415 checklists8 am: 8.0% of 187346 checklists9 am: 6.3% of 151342 checklists10 am: 5.0% of 124522 checklists11 am: 4.1% of 97088 checklists12 pm: 3.7% of 78110 checklists1 pm: 3.3% of 73059 checklists2 pm: 3.4% of 68912 checklists3 pm: 3.4% of 68060 checklists4 pm: 3.4% of 69387 checklists5 pm: 4.7% of 52951 checklists6 pm: 6.2% of 31061 checklists7 pm: too few checklists (16076) to judge8 pm: too few checklists (5352) to judge9 pm: too few checklists (2369) to judge10 pm: too few checklists (1100) to judge11 pm: too few checklists (604) 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
January0.9%0.9%1.0%1.0%
February0.9%1.0%1.0%1.3%
March2.1%3.3%5.7%9.5%
April13%16%17%19%
May19%19%19%19%
June19%18%19%20%
July20%20%18%12%
August7.0%5.1%4.5%3.9%
September3.0%2.1%2.2%1.7%
October1.2%0.8%0.7%0.9%
November0.8%0.8%0.9%1.0%
December1.0%1.1%1.0%1.0%

Neighboring states

  • New Mexico: arrives the second week of April, 5 weeks later than Arizona
  • Nevada: arrives late March, 3 weeks later than Arizona
  • Utah: arrives mid April, 6 weeks later than Arizona
  • California: arrives early April, 4 weeks later than Arizona

Common questions

When do Ash-throated Flycatchers arrive in Arizona?
Ash-throated Flycatchers reach Arizona in early March, are common by late March, peak in early July (20% of checklists), and most are gone by late July.
When do Ash-throated Flycatchers leave Arizona?
Most Ash-throated Flycatchers have left Arizona by late July, when reports fall below half their usual rate. Stragglers are still reported until mid September.
When is the best time to see a Ash-throated Flycatcher in Arizona?
The Ash-throated Flycatcher is reported most often in early July, on about 20% of Arizona checklists.
Where in Arizona are Ash-throated Flycatchers seen most often?
By county, La Paz County, Pinal County, and Yuma County have the highest peak reporting rates for the Ash-throated Flycatcher (counties with at least 200 checklists).