WhenToBird

Aix sponsa · Anatidae

When Do Wood Ducks Arrive in California?

Adult male Wood Duck
Photo: Andrew Lai, CC BY 4.0 via iNaturalist

The Wood Duck is in California all year. It turns up on about 2.7% of checklists at its peak (late March) and on 1.6% in its quietest week (early July).

When to look

PresentAll year
Peak weekMar 22-31late March
Quietest weekJul 1-7early July

Best: late March. Here all year. Peak: on about 2.7% of California checklists.

  1. Jancommon
  2. Febpeak season
  3. Marpeak season
  4. Aprpeak season
  5. Maypeak season
  6. Juncommon
  7. Julcommon
  8. Augpeak season
  9. Seppeak season
  10. Octcommon
  11. Novcommon
  12. Deccommon

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

0%1%2%3%Jan 1-7: 1.7% of 112336 checklistsJan 8-14: 1.6% of 85518 checklistsJan 15-21: 1.8% of 86488 checklistsJan 22-31: 1.8% of 116174 checklistsFeb 1-7: 1.9% of 75171 checklistsFeb 8-14: 1.8% of 84467 checklistsFeb 15-21: 1.9% of 105683 checklistsFeb 22-28: 2.3% of 83396 checklistsMar 1-7: 2.6% of 77470 checklistsMar 8-14: 2.6% of 75180 checklistsMar 15-21: 2.8% of 80770 checklistsMar 22-31: 2.7% of 114116 checklistsApr 1-7: 2.8% of 84057 checklistsApr 8-14: 2.8% of 83692 checklistsApr 15-21: 2.5% of 89242 checklistsApr 22-30: 2.8% of 114289 checklistsMay 1-7: 2.7% of 85728 checklistsMay 8-14: 2.5% of 91984 checklistsMay 15-21: 2.5% of 75478 checklistsMay 22-31: 2.1% of 106250 checklistsJun 1-7: 2.1% of 70051 checklistsJun 8-14: 1.9% of 67485 checklistsJun 15-21: 1.8% of 66269 checklistsJun 22-30: 1.6% of 79172 checklistsJul 1-7: 1.6% of 62877 checklistsJul 8-14: 1.5% of 60328 checklistsJul 15-21: 1.7% of 59705 checklistsJul 22-31: 1.8% of 83796 checklistsAug 1-7: 2.0% of 60215 checklistsAug 8-14: 2.1% of 60172 checklistsAug 15-21: 2.1% of 59877 checklistsAug 22-31: 2.3% of 89107 checklistsSep 1-7: 2.3% of 72000 checklistsSep 8-14: 2.3% of 71228 checklistsSep 15-21: 2.3% of 76808 checklistsSep 22-30: 2.1% of 100204 checklistsOct 1-7: 2.0% of 76571 checklistsOct 8-14: 1.8% of 80874 checklistsOct 15-21: 1.9% of 74581 checklistsOct 22-31: 1.7% of 97498 checklistsNov 1-7: 1.8% of 70851 checklistsNov 8-14: 1.7% of 72431 checklistsNov 15-21: 1.9% of 66767 checklistsNov 22-30: 1.8% of 94737 checklistsDec 1-7: 1.8% of 65393 checklistsDec 8-14: 1.7% of 67449 checklistsDec 15-21: 1.6% of 83421 checklistsDec 22-31: 1.5% 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. Yolo CountyBest mid April · 1628 checklists that week, 67,424 in all22%
  2. Colusa CountyBest the second week of May · 149 checklists that week, 7,653 in all19%
  3. Sutter CountyBest mid March · 85 checklists that week, 4,996 in all19%
  4. Stanislaus CountyBest the second week of May · 768 checklists that week, 30,240 in all17%
  5. Amador CountyBest the second week of September · 74 checklists that week, 4,733 in all17%
  6. Lake CountyBest the second week of April · 273 checklists that week, 12,989 in all16%

Best spots

Share of checklists at the peak
  1. Santee Lakes Regional ParkSan Diego County, best mid August · 35 checklists that week, 3,075 in all97%
  2. Neary Lagoon ParkSanta Cruz County, best mid July · 27 checklists that week, 2,556 in all96%
  3. American River Parkway (west 2)Sacramento County, best late February · 22 checklists that week, 633 in all94%
  4. Hart Memorial ParkKern County, best early March · 23 checklists that week, 712 in all94%
  5. American River Parkway (La Riviera)Sacramento County, best the second week of April · 23 checklists that week, 747 in all92%
  6. San Luis Rey River TrailSan Diego County, best early May · 27 checklists that week, 983 in all91%

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

Best time of day

In California, the Wood Duck is most often listed on checklists started between 6 and 8 am (3.1% of those checklists).

0%1%2%3%4%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: 3.1% of 186053 checklists7 am: 3.1% of 444086 checklists8 am: 2.8% of 535846 checklists9 am: 2.1% of 486061 checklists10 am: 1.6% of 411130 checklists11 am: 1.4% of 325798 checklists12 pm: 1.4% of 269132 checklists1 pm: 1.6% of 244762 checklists2 pm: 1.8% of 235420 checklists3 pm: 1.8% of 232365 checklists4 pm: 1.8% of 208688 checklists5 pm: 1.9% of 146104 checklists6 pm: 1.7% 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
January1.7%1.6%1.8%1.8%
February1.9%1.8%1.9%2.3%
March2.6%2.6%2.8%2.7%
April2.8%2.8%2.5%2.8%
May2.7%2.5%2.5%2.1%
June2.1%1.9%1.8%1.6%
July1.6%1.5%1.7%1.8%
August2.0%2.1%2.1%2.3%
September2.3%2.3%2.3%2.1%
October2.0%1.8%1.9%1.7%
November1.8%1.7%1.9%1.8%
December1.8%1.7%1.6%1.5%

Neighboring states

  • Nevada: winter visitor, peaks the second week of November
  • Utah: winter visitor, peaks late March
  • Arizona: winter visitor, peaks the second week of November
  • Oregon: all year, most in fall, peaks late August

Common questions

When do Wood Ducks arrive in California?
The Wood Duck is in California all year. It turns up on about 2.7% of checklists at its peak (late March) and on 1.6% in its quietest week (early July).
When do Wood Ducks leave California?
The Wood Duck does not leave California: it is reported all year, from 1.6% of checklists in early July to 2.7% in late March.
When is the best time to see a Wood Duck in California?
The Wood Duck is reported most often in late March, on about 2.7% of California checklists.
Where in California are Wood Ducks seen most often?
By county, Yolo County, Colusa County, and Sutter County have the highest peak reporting rates for the Wood Duck (counties with at least 200 checklists).