Birding spot · Boulder County, Colorado
Birding at Hecla Lake: What You'll See Each Week In November, the birds most often reported at Hecla Lake are Mallard (93%), Ring-necked Duck (85%), and Rock Pigeon (81%). It is busiest in spring, when 56 species turn up on at least 1 in 20 checklists, and species counts peak in mid May (60 species). 136 species have been reported here across 2,072 complete checklists from 355 birders.
Species by week 0 20 40 60 Jan 1-7: 38 species on 5%+ of 34 checklists Jan 8-14: 32 species on 5%+ of 21 checklists Jan 15-21: 37 species on 5%+ of 24 checklists Jan 22-31: 35 species on 5%+ of 29 checklists Feb 1-7: 40 species on 5%+ of 53 checklists Feb 8-14: 36 species on 5%+ of 23 checklists Feb 15-21: 38 species on 5%+ of 31 checklists Feb 22-28: 38 species on 5%+ of 28 checklists Mar 1-7: 39 species on 5%+ of 50 checklists Mar 8-14: 41 species on 5%+ of 50 checklists Mar 15-21: 40 species on 5%+ of 51 checklists Mar 22-31: 46 species on 5%+ of 74 checklists Apr 1-7: 43 species on 5%+ of 109 checklists Apr 8-14: 46 species on 5%+ of 87 checklists Apr 15-21: 46 species on 5%+ of 68 checklists Apr 22-30: 51 species on 5%+ of 132 checklists May 1-7: 53 species on 5%+ of 148 checklists May 8-14: 50 species on 5%+ of 48 checklists May 15-21: 60 species on 5%+ of 35 checklists May 22-31: 51 species on 5%+ of 52 checklists Jun 1-7: 46 species on 5%+ of 31 checklists Jun 8-14: 44 species on 5%+ of 33 checklists Jun 15-21: 41 species on 5%+ of 27 checklists Jun 22-30: 35 species on 5%+ of 35 checklists Jul 1-7: 48 species on 5%+ of 20 checklists Jul 8-14: 50 species on 5%+ of 18 checklists Jul 15-21: 48 species on 5%+ of 20 checklists Jul 22-31: 46 species on 5%+ of 33 checklists Aug 1-7: 39 species on 5%+ of 30 checklists Aug 8-14: 54 species on 5%+ of 20 checklists Aug 15-21: 42 species on 5%+ of 19 checklists Aug 22-31: 41 species on 5%+ of 31 checklists Sep 1-7: 29 species on 5%+ of 21 checklists Sep 8-14: 41 species on 5%+ of 27 checklists Sep 15-21: 40 species on 5%+ of 32 checklists Sep 22-30: 43 species on 5%+ of 33 checklists Oct 1-7: 39 species on 5%+ of 23 checklists Oct 8-14: 43 species on 5%+ of 43 checklists Oct 15-21: 38 species on 5%+ of 40 checklists Oct 22-31: 46 species on 5%+ of 57 checklists Nov 1-7: 43 species on 5%+ of 49 checklists Nov 8-14: 40 species on 5%+ of 49 checklists Nov 15-21: 42 species on 5%+ of 71 checklists Nov 22-30: 43 species on 5%+ of 37 checklists Dec 1-7: 37 species on 5%+ of 26 checklists Dec 8-14: 36 species on 5%+ of 27 checklists Dec 15-21: 34 species on 5%+ of 27 checklists Dec 22-31: 35 species on 5%+ of 46 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 Mallard 93% 2 Ring-necked Duck 85% 3 Rock Pigeon 81% 4 Gadwall 81% 5 Hooded Merganser 80% 6 American Wigeon 73% 7 Canada Goose 67% 8 House Finch 59% 9 Northern Shoveler 54% 10 Cackling Goose 52% 11 Black-capped Chickadee 47% 12 Ring-billed Gull 43% 13 Blue Jay 39% 14 Northern Flicker 39% 15 European Starling 35% 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 .
Mallard93%
Ring-necked Duck85%
Rock Pigeon81%
Gadwall81%
Hooded Merganser80%
American Wigeon73%
Canada Goose67%
House Finch59%
Northern Shoveler54%
Cackling Goose52%
Black-capped Chickadee47%
Ring-billed Gull43%
Blue Jay39%
Northern Flicker39%
European Starling35%