WhenToBird

Lanius ludovicianus · Laniidae

When Do Loggerhead Shrikes Arrive in Arizona?

Adult Loggerhead Shrike
Photo: Mark Connolly, CC0 1.0 via iNaturalist

Loggerhead Shrikes are winter birds in Arizona: the first arrive in late June, they are common by late July, peak in the second week of January (7.2% of checklists), and most are gone by early March.

When to look

First arrivalsJun 22-30late June
Common byJul 22-31late July
PeakJan 8-14the second week of January
Most gone byMar 1-7early March

Best: the second week of January. First arrivals late June; most are gone by early March. Peak: on about 7.2% of Arizona checklists.

  1. Janpeak season
  2. Febpeak season
  3. Marcommon
  4. Apruncommon
  5. Mayuncommon
  6. Jununcommon
  7. Julcommon
  8. Augcommon
  9. Seppeak season
  10. Octpeak season
  11. Novpeak season
  12. Decpeak season

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

0%2%4%6%8%Jan 1-7: 7.1% of 34758 checklistsJan 8-14: 7.7% of 29835 checklistsJan 15-21: 6.9% of 29279 checklistsJan 22-31: 6.4% of 39716 checklistsFeb 1-7: 5.3% of 27299 checklistsFeb 8-14: 4.8% of 28703 checklistsFeb 15-21: 4.1% of 35357 checklistsFeb 22-28: 3.6% of 29889 checklistsMar 1-7: 3.5% of 29932 checklistsMar 8-14: 3.1% of 32982 checklistsMar 15-21: 2.9% of 34731 checklistsMar 22-31: 2.4% of 50213 checklistsApr 1-7: 2.3% of 35788 checklistsApr 8-14: 2.0% of 38087 checklistsApr 15-21: 2.0% of 41520 checklistsApr 22-30: 1.8% of 55218 checklistsMay 1-7: 1.8% of 39688 checklistsMay 8-14: 1.3% of 39398 checklistsMay 15-21: 1.5% of 29562 checklistsMay 22-31: 1.2% of 36774 checklistsJun 1-7: 1.3% of 21313 checklistsJun 8-14: 1.3% of 19129 checklistsJun 15-21: 1.4% of 17922 checklistsJun 22-30: 1.8% of 21188 checklistsJul 1-7: 1.8% of 17325 checklistsJul 8-14: 2.3% of 16463 checklistsJul 15-21: 2.6% of 18642 checklistsJul 22-31: 3.2% of 31215 checklistsAug 1-7: 3.9% of 28163 checklistsAug 8-14: 4.3% of 31329 checklistsAug 15-21: 5.0% of 23878 checklistsAug 22-31: 5.3% of 28508 checklistsSep 1-7: 5.8% of 20878 checklistsSep 8-14: 6.1% of 19671 checklistsSep 15-21: 5.9% of 19859 checklistsSep 22-30: 5.0% of 25179 checklistsOct 1-7: 4.8% of 19420 checklistsOct 8-14: 5.1% of 21925 checklistsOct 15-21: 5.5% of 20995 checklistsOct 22-31: 5.7% of 29258 checklistsNov 1-7: 6.0% of 21269 checklistsNov 8-14: 6.4% of 22753 checklistsNov 15-21: 6.2% of 21982 checklistsNov 22-30: 6.5% of 29475 checklistsDec 1-7: 7.0% of 20810 checklistsDec 8-14: 6.9% of 22229 checklistsDec 15-21: 7.2% of 25148 checklistsDec 22-31: 6.8% 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 the second week of August · 24 checklists that week, 7,279 in all32%
  2. Yuma CountyBest mid August · 178 checklists that week, 14,687 in all30%
  3. Greenlee CountyBest late September · 49 checklists that week, 2,745 in all22%
  4. Cochise CountyBest mid January · 3064 checklists that week, 190,093 in all19%
  5. Pinal CountyBest the second week of December · 724 checklists that week, 40,036 in all15%
  6. Mohave CountyBest late August · 292 checklists that week, 18,083 in all14%

Best spots

Share of checklists at the peak
  1. Whitewater Draw Wildlife AreaCochise County, best the second week of September · 53 checklists that week, 5,324 in all75%
  2. Environmental Operations ParkCochise County, best the second week of December · 22 checklists that week, 1,829 in all75%
  3. Phoenix South Mountain ParkMaricopa County, best late August · 30 checklists that week, 1,508 in all72%
  4. Empire-Cienega Area of Critical Environmental Concern (Smith Canyon)Santa Cruz County, best late October · 25 checklists that week, 711 in all68%
  5. Arlington Wildlife AreaMaricopa County, best the second week of November · 20 checklists that week, 760 in all68%

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

Best time of day

In Arizona, the Loggerhead Shrike is most often listed on checklists started between 6 and 8 am (5.2% of those checklists).

0%2%4%6%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: 4.9% of 38350 checklists6 am: 5.3% of 118786 checklists7 am: 5.2% of 183415 checklists8 am: 4.9% of 187346 checklists9 am: 4.5% of 151342 checklists10 am: 4.1% of 124522 checklists11 am: 3.6% of 97088 checklists12 pm: 3.4% of 78110 checklists1 pm: 3.5% of 73059 checklists2 pm: 3.7% of 68912 checklists3 pm: 3.7% of 68060 checklists4 pm: 3.0% of 69387 checklists5 pm: 2.1% of 52951 checklists6 pm: 1.4% 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
January7.1%7.7%6.9%6.4%
February5.3%4.8%4.1%3.6%
March3.5%3.1%2.9%2.4%
April2.3%2.0%2.0%1.8%
May1.8%1.3%1.5%1.2%
June1.3%1.3%1.4%1.8%
July1.8%2.3%2.6%3.2%
August3.9%4.3%5.0%5.3%
September5.8%6.1%5.9%5.0%
October4.8%5.1%5.5%5.7%
November6.0%6.4%6.2%6.5%
December7.0%6.9%7.2%6.8%

Neighboring states

  • New Mexico: arrives the second week of July, 2 weeks later than Arizona
  • Nevada: arrives the second week of June, 2 weeks earlier than Arizona
  • Utah: arrives late March, 12 weeks earlier than Arizona
  • California: arrives late June, in the same week than Arizona

Common questions

When do Loggerhead Shrikes arrive in Arizona?
Loggerhead Shrikes are winter birds in Arizona: the first arrive in late June, they are common by late July, peak in the second week of January (7.2% of checklists), and most are gone by early March.
When do Loggerhead Shrikes leave Arizona?
Most Loggerhead Shrikes have left Arizona by early March, when reports fall below half their usual rate. Stragglers are still reported until late April.
When is the best time to see a Loggerhead Shrike in Arizona?
The Loggerhead Shrike is reported most often in the second week of January, on about 7.2% of Arizona checklists.
Where in Arizona are Loggerhead Shrikes seen most often?
By county, La Paz County, Yuma County, and Greenlee County have the highest peak reporting rates for the Loggerhead Shrike (counties with at least 200 checklists).