| Cliff Swallow(Petrochelidon pyrrhonota) |
| - - - Spring - - - |
| Number | Date | Location | Observer | Comment |
| 3,000 | 2021-05-29 | Polk County, Oak Lake,47.6584505,-95.9614563 | Ruffing | Rough estimates counting. Clouds across the entire lake. |
| 2,000 | 2014-05-13 | Hennepin County, Old Cedar Ave. Bridge,44.8306236,-93.2436534 | Fall | I spent about 1/2 hour calculating this number, by counting the number of scope |
| 1,000 | 2024-05-27 | Pennington County, Thief River Falls WTP,48.10732,-96.23161 | Emerson | |
| 800 | 2015-05-27 | Polk County, Agassiz Valley,48.15199,-96.64096 | Aubol | |
| 800 | 2009-05-14 | Polk County, Albany STP | Russell | feeding over ponds on cold day |
| 800 | 2015-05-26 | Watonwan County, 44.0839x-94.7994 - May 26, 2015, 4:07 PM,44.083897,-94.799355 | Bardon | |
| 550 | 2009-05-23 | Houston County | Hertzel | Many occupied nests. |
| 500 | 2012-05-18 | Polk County, 27499 190th street nw | Hughes | |
| 395 | 2008-05-28 | Marshall County | Svingen | Agassiz NWR |
| 360 | 2009-05-28 | Marshall County | Svingen | Agassiz NWR observations by PHS, JMJ. |
| 300 | 2011-05-26 | Houston County, Caledonia | Tervo | |
| 230 | 2009-05-23 | Winona County | Hertzel | Many occupied nests. |
| 200 | 2006-05-19 | Fillmore County | Overcott | |
| - - - Summer - - - |
| Number | Date | Location | Observer | Comment |
| 1,000 | 2019-07-21 | Olmsted County, 10723 65th Street Northeast, Elgin, Minnesota, US (44.093, -92.2 | Peterson | |
| 800 | 2020-07-29 | Lyon County, Lone Tree Lake (Lyon Co.),44.6276185,-95.7079124 | Wee | Gathering for migration, estimate |
| 580 | 2015-07-30 | Lake County, Two Harbors--Lighthouse Point,47.013662,-91.6639915 | Lind | All heading west and southwest - counted by fives and singles. Many seemed to be |
| 500 | 2014-06-08 | Clay County, Highway 10 County Road 23 and County Road 12,46.8364968,-96.422495 | Goodchild | Numerous active cliff swallow nests were found under the Highway 10 bridges over |
| 500 | 2017-07-08 | Grant County, North Ottawa Impoundment,45.9856315,-96.2471008 | Bielfelt | |
| 500 | 2006-06-30 | Marshall County | Svingen | Agassiz NWR |
| 403 | 2017-06-18 | Lac qui Parle County, Big Stone NWR,45.2450335,-96.336031 | Martinez | |
| 400 | 2001-06-02 | Red Lake County | Schroeder | |
| 350 | 2007-06-10 | Swift County | Svingen | 350 Cliff Swallow nests many with young still in the nest and unable to fly bein |
| - - - Fall - - - |
| Number | Date | Location | Observer | Comment |
| 7,109 | 2015-08-16 | St. Louis County | Bardon | Hawk Ridge/Lester River Census |
| 6,415 | 2019-08-28 | St. Louis County, Stoney Point,46.9241500,-91.8174600 | Kolbe | |
| 3,450 | 2020-09-04 | Lac qui Parle County, Salt Lake,44.9645052,-96.4437363 | Wee | Counted by 50s (or at least tried)there was a massive midge fly hatch in the mor |
| 3,113 | 2020-09-03 | St. Louis County, Hawk Ridge Nature Reserve,46.8469659,-92.0315212 | HRBO | Huge swallow flight today with vast majority being CLSW |
| 2,807 | 2014-08-26 | St. Louis County | Bardon | Hawk Ridge/Lester River Census |
| 2,603 | 2016-08-25 | St. Louis County | Bardon | Hawk Ridge/Lester River Census |
| 2,570 | 2017-08-17 | St. Louis County, Lester River Mouth,46.8373853,-92.0063138 | Kolbe | Careful count of migrants moving down the shore. Started as singles and grew to |
| 2,512 | 2011-08-17 | St. Louis County | Bardon | HRNR-Lester River Count |
| 1,178 | 2015-08-24 | St. Louis County | Bardon | Hawk Ridge/Lester River Census |
| 1,052 | 2015-08-25 | St. Louis County | Bardon | Hawk Ridge/Lester River Census |
| 1,028 | 2013-08-19 | St. Louis County | Bardon | Hawk Ridge/Lester River Census |
| 998 | 2013-08-20 | St. Louis County | Bardon | Hawk Ridge/Lester River Census |
| 625 | 2011-08-19 | St. Louis County | Bardon | HRNR-Lester River Count |
| 324 | 2011-08-24 | St. Louis County | Bardon | HRNR-Lester River Count |
| 300 | 2012-08-27 | Mower County, Brownsdale Sewage Ponds | Nyhus | |
| 200 | 2009-08-19 | Crow Wing County, Ironton sewer ponds | Blanich | |
| 130 | 2006-08-06 | Lake County | Lind | counted in 10 minutes during the evening in Two Harbors |
|   |
| Breeds throughout. |