WhenToBird

Buteo jamaicensis · Accipitridae

When Do Red-tailed Hawks Arrive in California?

Adult Red-tailed Hawk
Photo: Catherine C. Galley, CC BY 4.0 via iNaturalist

The Red-tailed Hawk is in California all year. It turns up on about 30% of checklists at its peak (the second week of December) and on 16% in its quietest week (the second week of August).

When to look

PresentAll year
Peak weekDec 8-14the second week of December
Quietest weekAug 8-14the second week of August

Best: the second week of December. Here all year. Peak: on about 30% of California checklists.

  1. Janpeak season
  2. Febpeak season
  3. Marpeak season
  4. Aprpeak season
  5. Maypeak season
  6. Juncommon
  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%10%20%30%40%Jan 1-7: 29% of 112336 checklistsJan 8-14: 29% of 85518 checklistsJan 15-21: 30% of 86488 checklistsJan 22-31: 30% of 116174 checklistsFeb 1-7: 29% of 75171 checklistsFeb 8-14: 29% of 84467 checklistsFeb 15-21: 27% of 105683 checklistsFeb 22-28: 29% of 83396 checklistsMar 1-7: 29% of 77470 checklistsMar 8-14: 28% of 75180 checklistsMar 15-21: 28% of 80770 checklistsMar 22-31: 27% of 114116 checklistsApr 1-7: 26% of 84057 checklistsApr 8-14: 26% of 83692 checklistsApr 15-21: 25% of 89242 checklistsApr 22-30: 25% of 114289 checklistsMay 1-7: 25% of 85728 checklistsMay 8-14: 23% of 91984 checklistsMay 15-21: 23% of 75478 checklistsMay 22-31: 23% of 106250 checklistsJun 1-7: 21% of 70051 checklistsJun 8-14: 20% of 67485 checklistsJun 15-21: 20% of 66269 checklistsJun 22-30: 20% of 79172 checklistsJul 1-7: 20% of 62877 checklistsJul 8-14: 19% of 60328 checklistsJul 15-21: 18% of 59705 checklistsJul 22-31: 17% of 83796 checklistsAug 1-7: 17% of 60215 checklistsAug 8-14: 16% of 60172 checklistsAug 15-21: 16% of 59877 checklistsAug 22-31: 18% of 89107 checklistsSep 1-7: 19% of 72000 checklistsSep 8-14: 21% of 71228 checklistsSep 15-21: 23% of 76808 checklistsSep 22-30: 24% of 100204 checklistsOct 1-7: 24% of 76571 checklistsOct 8-14: 25% of 80874 checklistsOct 15-21: 25% of 74581 checklistsOct 22-31: 26% of 97498 checklistsNov 1-7: 28% of 70851 checklistsNov 8-14: 28% of 72431 checklistsNov 15-21: 29% of 66767 checklistsNov 22-30: 29% of 94737 checklistsDec 1-7: 29% of 65393 checklistsDec 8-14: 30% of 67449 checklistsDec 15-21: 31% of 83421 checklistsDec 22-31: 29% of 124993 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 California 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.

Embed this map on your site

Where in California

Best counties

Share of checklists at the peak
  1. Colusa CountyBest late November · 251 checklists that week, 7,653 in all63%
  2. Glenn CountyBest mid December · 76 checklists that week, 5,189 in all60%
  3. Modoc CountyBest the second week of February · 44 checklists that week, 6,138 in all58%
  4. Sierra CountyBest the second week of January · 67 checklists that week, 8,945 in all57%
  5. Merced CountyBest early December · 282 checklists that week, 13,095 in all56%
  6. Sutter CountyBest the second week of November · 115 checklists that week, 4,996 in all54%

Best spots

Share of checklists at the peak
  1. Sycamore Canyon Open SpaceLos Angeles County, best the second week of February · 20 checklists that week, 456 in all100%
  2. Arbor ParkOrange County, best the second week of January · 23 checklists that week, 1,045 in all98%
  3. Piute PondsLos Angeles County, best early January · 21 checklists that week, 1,269 in all98%
  4. Harmony Headlands State ParkSan Luis Obispo County, best the second week of January · 20 checklists that week, 681 in all98%
  5. Lynch CanyonSolano County, best the second week of February · 22 checklists that week, 433 in all98%
  6. Riverbottom ParkFresno County, best late April · 28 checklists that week, 508 in all97%

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

Best time of day

In California, the Red-tailed Hawk is most often listed on checklists started between 10 am and 12 pm (29% of those checklists).

0%10%20%30%12 am: too few checklists (1688) to judge1 am: too few checklists (1451) to judge2 am: too few checklists (1402) to judge3 am: too few checklists (1743) to judge4 am: too few checklists (4647) to judge5 am: too few checklists (32158) to judge6 am: 20% of 186053 checklists7 am: 24% of 444086 checklists8 am: 27% of 535846 checklists9 am: 28% of 486061 checklists10 am: 29% of 411130 checklists11 am: 29% of 325798 checklists12 pm: 28% of 269132 checklists1 pm: 27% of 244762 checklists2 pm: 26% of 235420 checklists3 pm: 24% of 232365 checklists4 pm: 20% of 208688 checklists5 pm: 18% of 146104 checklists6 pm: 13% of 96867 checklists7 pm: too few checklists (50942) to judge8 pm: too few checklists (14803) to judge9 pm: too few checklists (5561) to judge10 pm: too few checklists (3546) to judge11 pm: too few checklists (2092) 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
January29%29%30%30%
February29%29%27%29%
March29%28%28%27%
April26%26%25%25%
May25%23%23%23%
June21%20%20%20%
July20%19%18%17%
August17%16%16%18%
September19%21%23%24%
October24%25%25%26%
November28%28%29%29%
December29%30%31%29%

Neighboring states

  • Nevada: year-round, peaks the second week of December
  • Utah: year-round, peaks early January
  • Arizona: year-round, peaks the second week of January
  • Oregon: year-round, peaks the second week of March

Common questions

When do Red-tailed Hawks arrive in California?
The Red-tailed Hawk is in California all year. It turns up on about 30% of checklists at its peak (the second week of December) and on 16% in its quietest week (the second week of August).
When do Red-tailed Hawks leave California?
The Red-tailed Hawk does not leave California: it is reported all year, from 16% of checklists in the second week of August to 30% in the second week of December.
When is the best time to see a Red-tailed Hawk in California?
The Red-tailed Hawk is reported most often in the second week of December, on about 30% of California checklists.
Where in California are Red-tailed Hawks seen most often?
By county, Colusa County, Glenn County, and Modoc County have the highest peak reporting rates for the Red-tailed Hawk (counties with at least 200 checklists).