WhenToBird

Spatula discors · Anatidae

When Do Blue-winged Teals Arrive in California?

Adult female Blue-winged Teal
Photo: Guy Babineau, CC BY 4.0 via iNaturalist

Blue-winged Teals are winter birds in California: they arrive in mid September, peak in early March (2.7% of checklists), and most are gone by late April.

When to look

First arrivalsSep 15-21mid September
Common bySep 15-21mid September
PeakMar 1-7early March
Most gone byApr 22-30late April

Best: early March. First arrivals mid September; most are gone by late April. Peak: on about 2.7% of California checklists.

  1. Janpeak season
  2. Febpeak season
  3. Marpeak season
  4. Aprpeak season
  5. Mayuncommon
  6. Junrare
  7. Julrare
  8. Auguncommon
  9. Sepcommon
  10. Octpeak season
  11. Novpeak season
  12. Decpeak season

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

0%1%2%3%Jan 1-7: 2.6% of 112336 checklistsJan 8-14: 2.7% of 85518 checklistsJan 15-21: 2.7% of 86488 checklistsJan 22-31: 2.5% of 116174 checklistsFeb 1-7: 2.4% of 75171 checklistsFeb 8-14: 2.3% of 84467 checklistsFeb 15-21: 2.2% of 105683 checklistsFeb 22-28: 2.8% of 83396 checklistsMar 1-7: 2.8% of 77470 checklistsMar 8-14: 2.6% of 75180 checklistsMar 15-21: 2.4% of 80770 checklistsMar 22-31: 2.1% of 114116 checklistsApr 1-7: 2.2% of 84057 checklistsApr 8-14: 2.0% of 83692 checklistsApr 15-21: 1.7% of 89242 checklistsApr 22-30: 1.4% of 114289 checklistsMay 1-7: 0.7% of 85728 checklistsMay 8-14: 0.4% of 91984 checklistsMay 15-21: 0.4% of 75478 checklistsMay 22-31: 0.3% of 106250 checklistsJun 1-7: 0.4% of 70051 checklistsJun 8-14: 0.3% of 67485 checklistsJun 15-21: 0.3% of 66269 checklistsJun 22-30: 0.4% of 79172 checklistsJul 1-7: 0.3% of 62877 checklistsJul 8-14: 0.3% of 60328 checklistsJul 15-21: 0.2% of 59705 checklistsJul 22-31: 0.2% of 83796 checklistsAug 1-7: 0.2% of 60215 checklistsAug 8-14: 0.2% of 60172 checklistsAug 15-21: 0.3% of 59877 checklistsAug 22-31: 0.5% of 89107 checklistsSep 1-7: 0.7% of 72000 checklistsSep 8-14: 0.9% of 71228 checklistsSep 15-21: 1.2% of 76808 checklistsSep 22-30: 1.5% of 100204 checklistsOct 1-7: 1.8% of 76571 checklistsOct 8-14: 2.2% of 80874 checklistsOct 15-21: 2.1% of 74581 checklistsOct 22-31: 2.1% of 97498 checklistsNov 1-7: 2.2% of 70851 checklistsNov 8-14: 2.4% of 72431 checklistsNov 15-21: 2.2% of 66767 checklistsNov 22-30: 2.4% of 94737 checklistsDec 1-7: 2.4% of 65393 checklistsDec 8-14: 2.1% of 67449 checklistsDec 15-21: 1.8% of 83421 checklistsDec 22-31: 2.3% 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.

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Where in California

Best counties

Share of checklists at the peak
  1. Yolo CountyBest the second week of March · 1524 checklists that week, 67,424 in all10%
  2. Orange CountyBest mid November · 4237 checklists that week, 244,559 in all9.9%
  3. Merced CountyBest the second week of February · 399 checklists that week, 13,095 in all7.3%
  4. Imperial CountyBest mid September · 295 checklists that week, 24,551 in all7.3%
  5. Colusa CountyBest the second week of April · 143 checklists that week, 7,653 in all6.6%
  6. Riverside CountyBest mid January · 2739 checklists that week, 113,541 in all6.3%

Best spots

Share of checklists at the peak
  1. Sweet Springs Nature PreserveSan Luis Obispo County, best the second week of December · 30 checklists that week, 2,252 in all89%
  2. Salton Sea State Recreation AreaRiverside County, best early February · 90 checklists that week, 2,418 in all86%
  3. Famosa Slough Wildlife ReserveSan Diego County, best late March · 101 checklists that week, 4,942 in all78%
  4. Maywood ParkLos Angeles County, best the second week of February · 22 checklists that week, 411 in all78%

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

Best time of day

In California, the Blue-winged Teal is most often listed on checklists started between 1 and 3 pm (1.9% of those checklists).

0%0.5%1%1.5%2%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: 1.5% of 186053 checklists7 am: 1.7% of 444086 checklists8 am: 1.8% of 535846 checklists9 am: 1.7% of 486061 checklists10 am: 1.7% of 411130 checklists11 am: 1.6% of 325798 checklists12 pm: 1.6% of 269132 checklists1 pm: 1.8% of 244762 checklists2 pm: 1.9% of 235420 checklists3 pm: 1.8% of 232365 checklists4 pm: 1.4% of 208688 checklists5 pm: 1.1% of 146104 checklists6 pm: 0.7% 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
January2.6%2.7%2.7%2.5%
February2.4%2.3%2.2%2.8%
March2.8%2.6%2.4%2.1%
April2.2%2.0%1.7%1.4%
May0.7%0.4%0.4%0.3%
June0.4%0.3%0.3%0.4%
July0.3%0.3%0.2%0.2%
August0.2%0.2%0.3%0.5%
September0.7%0.9%1.2%1.5%
October1.8%2.2%2.1%2.1%
November2.2%2.4%2.2%2.4%
December2.4%2.1%1.8%2.3%

Neighboring states

  • Nevada: arrives early March, 22 weeks later than California
  • Utah: arrives mid March, 24 weeks earlier than California
  • Arizona: arrives mid August, 4 weeks earlier than California
  • Oregon: arrives late April, 19 weeks earlier than California

Common questions

When do Blue-winged Teals arrive in California?
Blue-winged Teals are winter birds in California: they arrive in mid September, peak in early March (2.7% of checklists), and most are gone by late April.
When do Blue-winged Teals leave California?
Most Blue-winged Teals have left California by late April, when reports fall below half their usual rate.
When is the best time to see a Blue-winged Teal in California?
The Blue-winged Teal is reported most often in early March, on about 2.7% of California checklists.
Where in California are Blue-winged Teals seen most often?
By county, Yolo County, Orange County, and Merced County have the highest peak reporting rates for the Blue-winged Teal (counties with at least 200 checklists).