WhenToBird

Larus occidentalis · Laridae

When Do Western Gulls Arrive in Oregon?

Adult Western Gull
Photo: emilyd47, CC BY-SA 4.0 via iNaturalist

The Western Gull is in Oregon all year. It turns up on about 9.6% of checklists at its peak (early September) and on 3.9% in its quietest week (early June).

When to look

PresentAll year
Peak weekSep 1-7early September
Quietest weekJun 1-7early June

Best: early September. Here all year. Peak: on about 9.6% of Oregon checklists.

  1. Jancommon
  2. Febcommon
  3. Marcommon
  4. Aprcommon
  5. Maycommon
  6. Juncommon
  7. Julpeak season
  8. Augpeak season
  9. Seppeak season
  10. Octpeak season
  11. Novpeak season
  12. Deccommon

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

0%5%10%15%Jan 1-7: 6.4% of 34973 checklistsJan 8-14: 5.9% of 26807 checklistsJan 15-21: 6.0% of 26567 checklistsJan 22-31: 6.1% of 36019 checklistsFeb 1-7: 6.0% of 24020 checklistsFeb 8-14: 5.3% of 25765 checklistsFeb 15-21: 4.4% of 31019 checklistsFeb 22-28: 4.9% of 24582 checklistsMar 1-7: 4.7% of 24834 checklistsMar 8-14: 4.7% of 24642 checklistsMar 15-21: 4.9% of 27420 checklistsMar 22-31: 5.2% of 39913 checklistsApr 1-7: 4.3% of 28817 checklistsApr 8-14: 4.6% of 31221 checklistsApr 15-21: 4.8% of 34402 checklistsApr 22-30: 6.1% of 47144 checklistsMay 1-7: 6.5% of 37716 checklistsMay 8-14: 5.0% of 39651 checklistsMay 15-21: 4.9% of 37496 checklistsMay 22-31: 3.9% of 56967 checklistsJun 1-7: 3.6% of 35893 checklistsJun 8-14: 4.3% of 31880 checklistsJun 15-21: 4.6% of 30942 checklistsJun 22-30: 5.3% of 38478 checklistsJul 1-7: 6.0% of 27409 checklistsJul 8-14: 7.1% of 25161 checklistsJul 15-21: 7.9% of 25473 checklistsJul 22-31: 8.9% of 33920 checklistsAug 1-7: 9.1% of 24310 checklistsAug 8-14: 9.9% of 23675 checklistsAug 15-21: 9.6% of 23623 checklistsAug 22-31: 9.4% of 33762 checklistsSep 1-7: 9.1% of 25120 checklistsSep 8-14: 10% of 24458 checklistsSep 15-21: 8.6% of 25528 checklistsSep 22-30: 8.1% of 31631 checklistsOct 1-7: 7.3% of 25498 checklistsOct 8-14: 8.6% of 25161 checklistsOct 15-21: 6.8% of 23701 checklistsOct 22-31: 8.1% of 30996 checklistsNov 1-7: 7.5% of 21089 checklistsNov 8-14: 7.7% of 21880 checklistsNov 15-21: 7.4% of 21501 checklistsNov 22-30: 7.7% of 28930 checklistsDec 1-7: 6.5% of 19807 checklistsDec 8-14: 6.2% of 21022 checklistsDec 15-21: 6.0% of 24817 checklistsDec 22-31: 6.5% of 37592 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 Oregon 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 Oregon

Best counties

Share of checklists at the peak
  1. Lincoln CountyBest mid November · 1307 checklists that week, 66,994 in all56%
  2. Curry CountyBest the second week of August · 278 checklists that week, 12,513 in all49%
  3. Clatsop CountyBest late July · 1527 checklists that week, 44,300 in all47%
  4. Tillamook CountyBest the second week of September · 937 checklists that week, 45,809 in all46%
  5. Coos CountyBest mid September · 648 checklists that week, 24,368 in all46%
  6. Douglas CountyBest early December · 261 checklists that week, 17,976 in all12%

Best spots

Share of checklists at the peak
  1. Seal Rock State Recreation SiteLincoln County, best mid July · 21 checklists that week, 574 in all97%
  2. Neptune State Scenic ViewpointLane County, best late January · 34 checklists that week, 688 in all96%
  3. Oregon Islands National Wildlife Refuge (Oceanlake)Lincoln County, best late August · 34 checklists that week, 508 in all95%
  4. Oregon Dunes National Recreation Area (Cannery Point)Lane County, best mid August · 29 checklists that week, 667 in all95%
  5. Brandon South Jetty ParkCoos County, best the second week of January · 21 checklists that week, 937 in all95%
  6. Port of Siuslaw Campground and MarinaLane County, best late March · 23 checklists that week, 579 in all94%

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

Best time of day

In Oregon, the Western Gull is most often listed on checklists started between 1 and 3 pm (7.8% of those checklists).

0%2%4%6%8%12 am: too few checklists (1505) to judge1 am: too few checklists (675) to judge2 am: too few checklists (626) to judge3 am: too few checklists (1641) to judge4 am: too few checklists (3696) to judge5 am: too few checklists (14524) to judge6 am: 4.4% of 50677 checklists7 am: 5.1% of 125347 checklists8 am: 6.1% of 163668 checklists9 am: 6.6% of 160351 checklists10 am: 7.1% of 148940 checklists11 am: 7.6% of 124743 checklists12 pm: 7.2% of 112537 checklists1 pm: 7.9% of 98999 checklists2 pm: 7.8% of 94690 checklists3 pm: 7.4% of 87923 checklists4 pm: 6.2% of 75235 checklists5 pm: 5.2% of 54504 checklists6 pm: 4.6% of 40469 checklists7 pm: 3.2% of 33675 checklists8 pm: too few checklists (18715) to judge9 pm: too few checklists (5839) to judge10 pm: too few checklists (2704) to judge11 pm: too few checklists (1549) 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
January6.4%5.9%6.0%6.1%
February6.0%5.3%4.4%4.9%
March4.7%4.7%4.9%5.2%
April4.3%4.6%4.8%6.1%
May6.5%5.0%4.9%3.9%
June3.6%4.3%4.6%5.3%
July6.0%7.1%7.9%8.9%
August9.1%9.9%9.6%9.4%
September9.1%10%8.6%8.1%
October7.3%8.6%6.8%8.1%
November7.5%7.7%7.4%7.7%
December6.5%6.2%6.0%6.5%

Neighboring states

Common questions

When do Western Gulls arrive in Oregon?
The Western Gull is in Oregon all year. It turns up on about 9.6% of checklists at its peak (early September) and on 3.9% in its quietest week (early June).
When do Western Gulls leave Oregon?
The Western Gull does not leave Oregon: it is reported all year, from 3.9% of checklists in early June to 9.6% in early September.
When is the best time to see a Western Gull in Oregon?
The Western Gull is reported most often in early September, on about 9.6% of Oregon checklists.
Where in Oregon are Western Gulls seen most often?
By county, Lincoln County, Curry County, and Clatsop County have the highest peak reporting rates for the Western Gull (counties with at least 200 checklists).