WhenToBird

Peucaea carpalis · Passerellidae

When Do Rufous-winged Sparrows Arrive in Arizona?

Adult Rufous-winged Sparrow
Photo: Ron Bondy, CC BY-SA 4.0 via iNaturalist

The Rufous-winged Sparrow is in Arizona all year. It turns up on about 6.9% of checklists at its peak (mid August) and on 3.9% in its quietest week (early June).

When to look

PresentAll year
Peak weekAug 15-21mid August
Quietest weekJun 1-7early June

Best: mid August. Here all year. Peak: on about 6.9% of Arizona checklists.

  1. Jancommon
  2. Febpeak season
  3. Marpeak season
  4. Aprpeak season
  5. Maycommon
  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%2%4%6%8%Jan 1-7: 4.1% of 34758 checklistsJan 8-14: 4.6% of 29835 checklistsJan 15-21: 4.5% of 29279 checklistsJan 22-31: 5.0% of 39716 checklistsFeb 1-7: 5.2% of 27299 checklistsFeb 8-14: 5.5% of 28703 checklistsFeb 15-21: 5.4% of 35357 checklistsFeb 22-28: 6.4% of 29889 checklistsMar 1-7: 6.5% of 29932 checklistsMar 8-14: 6.9% of 32982 checklistsMar 15-21: 6.9% of 34731 checklistsMar 22-31: 6.8% of 50213 checklistsApr 1-7: 6.7% of 35788 checklistsApr 8-14: 6.6% of 38087 checklistsApr 15-21: 5.4% of 41520 checklistsApr 22-30: 4.9% of 55218 checklistsMay 1-7: 4.8% of 39688 checklistsMay 8-14: 4.2% of 39398 checklistsMay 15-21: 4.0% of 29562 checklistsMay 22-31: 3.7% of 36774 checklistsJun 1-7: 4.1% of 21313 checklistsJun 8-14: 3.9% of 19129 checklistsJun 15-21: 4.6% of 17922 checklistsJun 22-30: 5.6% of 21188 checklistsJul 1-7: 6.1% of 17325 checklistsJul 8-14: 6.6% of 16463 checklistsJul 15-21: 6.7% of 18642 checklistsJul 22-31: 6.9% of 31215 checklistsAug 1-7: 6.3% of 28163 checklistsAug 8-14: 7.1% of 31329 checklistsAug 15-21: 6.9% of 23878 checklistsAug 22-31: 6.7% of 28508 checklistsSep 1-7: 6.4% of 20878 checklistsSep 8-14: 6.3% of 19671 checklistsSep 15-21: 6.0% of 19859 checklistsSep 22-30: 5.4% of 25179 checklistsOct 1-7: 5.7% of 19420 checklistsOct 8-14: 5.1% of 21925 checklistsOct 15-21: 5.0% of 20995 checklistsOct 22-31: 4.7% of 29258 checklistsNov 1-7: 4.9% of 21269 checklistsNov 8-14: 4.5% of 22753 checklistsNov 15-21: 4.6% of 21982 checklistsNov 22-30: 4.4% of 29475 checklistsDec 1-7: 5.0% of 20810 checklistsDec 8-14: 5.2% of 22229 checklistsDec 15-21: 4.8% of 25148 checklistsDec 22-31: 4.1% 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. Pima CountyBest mid July · 5510 checklists that week, 437,722 in all17%
  2. Santa Cruz CountyBest late September · 2013 checklists that week, 162,726 in all14%
  3. Pinal CountyBest the second week of August · 609 checklists that week, 40,036 in all12%
  4. Cochise CountyBest early December · 1737 checklists that week, 190,093 in all2.9%
  5. Graham CountyBest early December · 130 checklists that week, 9,876 in all0.8%
  6. Gila CountyBest the second week of December · 122 checklists that week, 14,834 in all0.2%

Best spots

Share of checklists at the peak
  1. Montrose CanyonPima County, best the second week of July · 44 checklists that week, 7,116 in all88%
  2. Abraham Lincoln Regional ParkPima County, best late August · 21 checklists that week, 610 in all87%
  3. Sabino LakePima County, best mid July · 50 checklists that week, 4,540 in all86%
  4. Catalina Regional ParkPima County, best the second week of August · 22 checklists that week, 868 in all83%

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

Best time of day

In Arizona, the Rufous-winged Sparrow is most often listed on checklists started between 5 and 7 am (9.2% of those checklists).

0%5%10%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: 8.8% of 38350 checklists6 am: 9.4% of 118786 checklists7 am: 8.1% of 183415 checklists8 am: 6.8% of 187346 checklists9 am: 5.3% of 151342 checklists10 am: 4.3% of 124522 checklists11 am: 3.4% of 97088 checklists12 pm: 3.1% of 78110 checklists1 pm: 3.1% of 73059 checklists2 pm: 3.2% of 68912 checklists3 pm: 3.8% of 68060 checklists4 pm: 3.9% of 69387 checklists5 pm: 3.7% of 52951 checklists6 pm: 4.1% 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
January4.1%4.6%4.5%5.0%
February5.2%5.5%5.4%6.4%
March6.5%6.9%6.9%6.8%
April6.7%6.6%5.4%4.9%
May4.8%4.2%4.0%3.7%
June4.1%3.9%4.6%5.6%
July6.1%6.6%6.7%6.9%
August6.3%7.1%6.9%6.7%
September6.4%6.3%6.0%5.4%
October5.7%5.1%5.0%4.7%
November4.9%4.5%4.6%4.4%
December5.0%5.2%4.8%4.1%

Common questions

When do Rufous-winged Sparrows arrive in Arizona?
The Rufous-winged Sparrow is in Arizona all year. It turns up on about 6.9% of checklists at its peak (mid August) and on 3.9% in its quietest week (early June).
When do Rufous-winged Sparrows leave Arizona?
The Rufous-winged Sparrow does not leave Arizona: it is reported all year, from 3.9% of checklists in early June to 6.9% in mid August.
When is the best time to see a Rufous-winged Sparrow in Arizona?
The Rufous-winged Sparrow is reported most often in mid August, on about 6.9% of Arizona checklists.
Where in Arizona are Rufous-winged Sparrows seen most often?
By county, Pima County, Santa Cruz County, and Pinal County have the highest peak reporting rates for the Rufous-winged Sparrow (counties with at least 200 checklists).