Birding spot · Boulder County, Colorado
Birding at Varsity Lake (Bluebell Canyon): What You'll See Each Week In November, the birds most often reported at Varsity Lake (Bluebell Canyon) are American Crow (67%), Black-capped Chickadee (50%), and Northern Parula (50%). It is busiest in fall, when 21 species turn up on at least 1 in 20 checklists, and species counts peak in late May (36 species). 66 species have been reported here across 1,140 complete checklists from 140 birders.
Species by week 0 10 20 30 40 Jan 1-7: low data (5 checklists) Jan 8-14: 14 species on 5%+ of 14 checklists Jan 15-21: 14 species on 5%+ of 21 checklists Jan 22-31: 13 species on 5%+ of 78 checklists Feb 1-7: 13 species on 5%+ of 45 checklists Feb 8-14: 10 species on 5%+ of 47 checklists Feb 15-21: 14 species on 5%+ of 42 checklists Feb 22-28: 11 species on 5%+ of 41 checklists Mar 1-7: 12 species on 5%+ of 42 checklists Mar 8-14: 12 species on 5%+ of 34 checklists Mar 15-21: 13 species on 5%+ of 29 checklists Mar 22-31: 15 species on 5%+ of 16 checklists Apr 1-7: 10 species on 5%+ of 29 checklists Apr 8-14: 15 species on 5%+ of 34 checklists Apr 15-21: 19 species on 5%+ of 48 checklists Apr 22-30: 15 species on 5%+ of 50 checklists May 1-7: 23 species on 5%+ of 24 checklists May 8-14: low data (9 checklists) May 15-21: low data (8 checklists) May 22-31: 36 species on 5%+ of 23 checklists Jun 1-7: 23 species on 5%+ of 13 checklists Jun 8-14: 30 species on 5%+ of 10 checklists Jun 15-21: low data (4 checklists) Jun 22-30: 12 species on 5%+ of 11 checklists Jul 1-7: low data (3 checklists) Jul 8-14: low data (6 checklists) Jul 15-21: 16 species on 5%+ of 10 checklists Jul 22-31: 19 species on 5%+ of 20 checklists Aug 1-7: low data (5 checklists) Aug 8-14: low data (5 checklists) Aug 15-21: low data (9 checklists) Aug 22-31: 15 species on 5%+ of 30 checklists Sep 1-7: 12 species on 5%+ of 13 checklists Sep 8-14: 17 species on 5%+ of 19 checklists Sep 15-21: 12 species on 5%+ of 11 checklists Sep 22-30: 17 species on 5%+ of 19 checklists Oct 1-7: 13 species on 5%+ of 18 checklists Oct 8-14: 19 species on 5%+ of 18 checklists Oct 15-21: 15 species on 5%+ of 25 checklists Oct 22-31: 24 species on 5%+ of 33 checklists Nov 1-7: 16 species on 5%+ of 34 checklists Nov 8-14: 24 species on 5%+ of 87 checklists Nov 15-21: 18 species on 5%+ of 21 checklists Nov 22-30: 29 species on 5%+ of 20 checklists Dec 1-7: 21 species on 5%+ of 20 checklists Dec 8-14: 19 species on 5%+ of 16 checklists Dec 15-21: 21 species on 5%+ of 13 checklists Dec 22-31: low data (8 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 American Crow 67% 2 Black-capped Chickadee 50% 3 Northern Parula 50% 4 Rock Pigeon 27% 5 Common Raven 27% 6 Prothonotary Warbler 27% 7 House Finch 25% 8 Northern Flicker 23% 9 American Robin 22% 10 Downy Woodpecker 19% 11 Townsend's Solitaire 19% 12 Ruby-crowned Kinglet 19% 13 Brown Creeper 14% 14 Blue Jay 10% 15 Red-breasted Nuthatch 10% 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 .
American Crow67%
Black-capped Chickadee50%
Northern Parula50%
Rock Pigeon27%
Common Raven27%
Prothonotary Warbler27%
House Finch25%
Northern Flicker23%
American Robin22%
Downy Woodpecker19%
Townsend's Solitaire19%
Ruby-crowned Kinglet19%
Brown Creeper14%
Blue Jay10%
Red-breasted Nuthatch10%