Birding spot · Boulder County, Colorado
Birding at Walden Ponds Wildlife Habitat: What You'll See Each Week In November, the birds most often reported at Walden Ponds Wildlife Habitat are American Wigeon (91%), Mallard (90%), and Canada Goose (90%). It is busiest in spring, when 86 species turn up on at least 1 in 20 checklists, and species counts peak in the second week of May (85 species). 246 species have been reported here across 8,255 complete checklists from 1,948 birders.
Species by week 0 20 40 60 80 100 Jan 1-7: 46 species on 5%+ of 136 checklists Jan 8-14: 49 species on 5%+ of 135 checklists Jan 15-21: 49 species on 5%+ of 98 checklists Jan 22-31: 47 species on 5%+ of 162 checklists Feb 1-7: 42 species on 5%+ of 124 checklists Feb 8-14: 43 species on 5%+ of 121 checklists Feb 15-21: 47 species on 5%+ of 119 checklists Feb 22-28: 44 species on 5%+ of 128 checklists Mar 1-7: 53 species on 5%+ of 168 checklists Mar 8-14: 47 species on 5%+ of 163 checklists Mar 15-21: 51 species on 5%+ of 178 checklists Mar 22-31: 60 species on 5%+ of 285 checklists Apr 1-7: 64 species on 5%+ of 256 checklists Apr 8-14: 61 species on 5%+ of 269 checklists Apr 15-21: 76 species on 5%+ of 238 checklists Apr 22-30: 76 species on 5%+ of 413 checklists May 1-7: 81 species on 5%+ of 332 checklists May 8-14: 85 species on 5%+ of 425 checklists May 15-21: 83 species on 5%+ of 310 checklists May 22-31: 74 species on 5%+ of 359 checklists Jun 1-7: 65 species on 5%+ of 194 checklists Jun 8-14: 63 species on 5%+ of 146 checklists Jun 15-21: 66 species on 5%+ of 119 checklists Jun 22-30: 58 species on 5%+ of 134 checklists Jul 1-7: 59 species on 5%+ of 104 checklists Jul 8-14: 54 species on 5%+ of 83 checklists Jul 15-21: 60 species on 5%+ of 72 checklists Jul 22-31: 59 species on 5%+ of 123 checklists Aug 1-7: 64 species on 5%+ of 104 checklists Aug 8-14: 58 species on 5%+ of 104 checklists Aug 15-21: 59 species on 5%+ of 106 checklists Aug 22-31: 63 species on 5%+ of 175 checklists Sep 1-7: 68 species on 5%+ of 136 checklists Sep 8-14: 61 species on 5%+ of 128 checklists Sep 15-21: 60 species on 5%+ of 125 checklists Sep 22-30: 60 species on 5%+ of 208 checklists Oct 1-7: 62 species on 5%+ of 167 checklists Oct 8-14: 50 species on 5%+ of 194 checklists Oct 15-21: 50 species on 5%+ of 132 checklists Oct 22-31: 53 species on 5%+ of 139 checklists Nov 1-7: 55 species on 5%+ of 120 checklists Nov 8-14: 51 species on 5%+ of 166 checklists Nov 15-21: 53 species on 5%+ of 133 checklists Nov 22-30: 54 species on 5%+ of 200 checklists Dec 1-7: 54 species on 5%+ of 127 checklists Dec 8-14: 51 species on 5%+ of 114 checklists Dec 15-21: 46 species on 5%+ of 89 checklists Dec 22-31: 48 species on 5%+ of 194 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 Wigeon 91% 2 Mallard 90% 3 Canada Goose 90% 4 Gadwall 84% 5 Ring-billed Gull 79% 6 Black-capped Chickadee 77% 7 Northern Flicker 73% 8 Belted Kingfisher 71% 9 Great Blue Heron 69% 10 Red-winged Blackbird 66% 11 Green-winged Teal 66% 12 Blue Jay 64% 13 Ring-necked Duck 63% 14 Rock Pigeon 62% 15 Black-billed Magpie 62% 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 Wigeon91%
Mallard90%
Canada Goose90%
Gadwall84%
Ring-billed Gull79%
Black-capped Chickadee77%
Northern Flicker73%
Belted Kingfisher71%
Great Blue Heron69%
Red-winged Blackbird66%
Green-winged Teal66%
Blue Jay64%
Ring-necked Duck63%
Rock Pigeon62%
Black-billed Magpie62%