Great Crested Flycatchers reach Oklahoma in the second week of April, are common by mid April, peak in mid May (29% of checklists), and most are gone by early September.
When to look
First arrivalsApr 8-14the second week of April
Common byApr 15-21mid April
PeakMay 15-21mid May
Most gone bySep 1-7early September
Best: mid May. First arrivals the second week of April; most are gone by early September. Peak: on about 29% of Oklahoma checklists.
Jannot usually seen
Febnot usually seen
Marnot usually seen
Aprcommon
Maypeak season
Junpeak season
Julcommon
Auguncommon
Sepuncommon
Octnot usually seen
Novnot usually seen
Decnot usually seen
Darker months: more checklists report it. Outlined: peak month.
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 Oklahoma 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
0%few checklistsno data
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.
Boomer LakePayne County, best the second week of May · 38 checklists that week, 407 in all74%
Sanborn Lake ParkPayne County, best mid May · 47 checklists that week, 992 in all73%
Busy spots report more of everything; compare the checklist counts before you drive anywhere.
Best time of day
In Oklahoma, the Great Crested Flycatcher is most often listed on checklists started between 6 and 8 am (15% of those checklists).
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
Month
Days 1-7
8-14
15-21
22-end
January
0%
0%
0%
0%
February
0%
0%
0%
0%
March
0%
0%
0.1%
0%
April
0%
0.3%
4.8%
17%
May
27%
29%
31%
27%
June
25%
21%
19%
17%
July
16%
13%
12%
7.9%
August
7.7%
8.4%
7.5%
9.8%
September
9.3%
6.4%
2.1%
0.6%
October
0.1%
0%
0%
0%
November
0%
0%
0%
0%
December
0%
0%
0%
0%
Neighboring states
Kansas: arrives mid April, 1 week later than Oklahoma
Arkansas: arrives the second week of April, in the same week than Oklahoma
Missouri: arrives mid April, 1 week later than Oklahoma
Nebraska: arrives late April, 2 weeks later than Oklahoma
Common questions
When do Great Crested Flycatchers arrive in Oklahoma?
Great Crested Flycatchers reach Oklahoma in the second week of April, are common by mid April, peak in mid May (29% of checklists), and most are gone by early September.
When do Great Crested Flycatchers leave Oklahoma?
Most Great Crested Flycatchers have left Oklahoma by early September, when reports fall below half their usual rate. Stragglers are still reported until mid September.
When is the best time to see a Great Crested Flycatcher in Oklahoma?
The Great Crested Flycatcher is reported most often in mid May, on about 29% of Oklahoma checklists.
Where in Oklahoma are Great Crested Flycatchers seen most often?
By county, Pawnee County, Johnston County, and Kay County have the highest peak reporting rates for the Great Crested Flycatcher (counties with at least 200 checklists).