Birding spot · Larimer County, Colorado
Birding at Lon Hagler Reservoir: What You'll See Each Week In November, the birds most often reported at Lon Hagler Reservoir are Northern Flicker (78%), American Robin (77%), and Blue Jay (74%). It is busiest in spring, when 74 species turn up on at least 1 in 20 checklists, and species counts peak in mid May (85 species). 180 species have been reported here across 1,172 complete checklists from 195 birders.
Species by week 0 20 40 60 80 100 Jan 1-7: 40 species on 5%+ of 28 checklists Jan 8-14: 37 species on 5%+ of 16 checklists Jan 15-21: low data (8 checklists) Jan 22-31: 29 species on 5%+ of 22 checklists Feb 1-7: 31 species on 5%+ of 11 checklists Feb 8-14: 35 species on 5%+ of 11 checklists Feb 15-21: low data (6 checklists) Feb 22-28: low data (8 checklists) Mar 1-7: 46 species on 5%+ of 15 checklists Mar 8-14: 51 species on 5%+ of 14 checklists Mar 15-21: 51 species on 5%+ of 12 checklists Mar 22-31: 42 species on 5%+ of 61 checklists Apr 1-7: 47 species on 5%+ of 28 checklists Apr 8-14: 46 species on 5%+ of 26 checklists Apr 15-21: 61 species on 5%+ of 34 checklists Apr 22-30: 74 species on 5%+ of 38 checklists May 1-7: 71 species on 5%+ of 48 checklists May 8-14: 80 species on 5%+ of 30 checklists May 15-21: 85 species on 5%+ of 36 checklists May 22-31: 71 species on 5%+ of 33 checklists Jun 1-7: 68 species on 5%+ of 15 checklists Jun 8-14: 63 species on 5%+ of 20 checklists Jun 15-21: 60 species on 5%+ of 13 checklists Jun 22-30: 55 species on 5%+ of 25 checklists Jul 1-7: 60 species on 5%+ of 16 checklists Jul 8-14: 59 species on 5%+ of 11 checklists Jul 15-21: 61 species on 5%+ of 16 checklists Jul 22-31: 56 species on 5%+ of 23 checklists Aug 1-7: 51 species on 5%+ of 12 checklists Aug 8-14: 71 species on 5%+ of 14 checklists Aug 15-21: 55 species on 5%+ of 21 checklists Aug 22-31: 66 species on 5%+ of 18 checklists Sep 1-7: 58 species on 5%+ of 26 checklists Sep 8-14: 67 species on 5%+ of 17 checklists Sep 15-21: 66 species on 5%+ of 20 checklists Sep 22-30: 49 species on 5%+ of 29 checklists Oct 1-7: 58 species on 5%+ of 17 checklists Oct 8-14: 53 species on 5%+ of 15 checklists Oct 15-21: 54 species on 5%+ of 18 checklists Oct 22-31: 38 species on 5%+ of 74 checklists Nov 1-7: 30 species on 5%+ of 44 checklists Nov 8-14: 53 species on 5%+ of 19 checklists Nov 15-21: 50 species on 5%+ of 19 checklists Nov 22-30: 44 species on 5%+ of 10 checklists Dec 1-7: 44 species on 5%+ of 60 checklists Dec 8-14: 49 species on 5%+ of 36 checklists Dec 15-21: 46 species on 5%+ of 32 checklists Dec 22-31: 40 species on 5%+ of 47 checklists Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Number of species reported on at least 5% of complete checklists, by week (4 per month). Grey bars: fewer than 10 checklists, not counted. In November: what to expect 1 Northern Flicker 78% 2 American Robin 77% 3 Blue Jay 74% 4 Black-billed Magpie 73% 5 Black-capped Chickadee 72% 6 House Finch 65% 7 American Goldfinch 63% 8 Song Sparrow 63% 9 Red-winged Blackbird 59% 10 Ring-billed Gull 58% 11 European Starling 47% 12 Belted Kingfisher 45% 13 American Crow 41% 14 Townsend's Solitaire 41% 15 Red-tailed Hawk 40% Share of complete checklists at this spot that reported the bird in November. The sparkline is the whole year, with this month highlighted.
Season by season Specialties Birds reported far more often here than across Colorado.
Nearby spots Frequency is the share of complete checklists at this location that listed the bird, 2016–2025. Busy places report more of everything, and the weekly chart counts species on at least 5% of checklists so a few stray reports do not inflate it. How to read it .
Northern Flicker78%
American Robin77%
Blue Jay74%
Black-billed Magpie73%
Black-capped Chickadee72%
House Finch65%
American Goldfinch63%
Song Sparrow63%
Red-winged Blackbird59%
Ring-billed Gull58%
European Starling47%
Belted Kingfisher45%
American Crow41%
Townsend's Solitaire41%
Red-tailed Hawk40%