Birding spot · Boulder County, Colorado
Birding at Walden Ponds Wildlife Habitat (south): What You'll See Each Week In November, the birds most often reported at Walden Ponds Wildlife Habitat (south) are Gadwall (88%), Mallard (80%), and Canada Goose (67%). It is busiest in spring, when 73 species turn up on at least 1 in 20 checklists, and species counts peak in late May (76 species). 173 species have been reported here across 1,446 complete checklists from 647 birders.
Species by week 0 20 40 60 80 Jan 1-7: 40 species on 5%+ of 29 checklists Jan 8-14: 46 species on 5%+ of 37 checklists Jan 15-21: 44 species on 5%+ of 32 checklists Jan 22-31: 46 species on 5%+ of 34 checklists Feb 1-7: 47 species on 5%+ of 37 checklists Feb 8-14: 41 species on 5%+ of 27 checklists Feb 15-21: 41 species on 5%+ of 41 checklists Feb 22-28: 47 species on 5%+ of 29 checklists Mar 1-7: 42 species on 5%+ of 29 checklists Mar 8-14: 40 species on 5%+ of 27 checklists Mar 15-21: 44 species on 5%+ of 23 checklists Mar 22-31: 50 species on 5%+ of 26 checklists Apr 1-7: 66 species on 5%+ of 18 checklists Apr 8-14: 58 species on 5%+ of 25 checklists Apr 15-21: 66 species on 5%+ of 30 checklists Apr 22-30: 58 species on 5%+ of 45 checklists May 1-7: 69 species on 5%+ of 32 checklists May 8-14: 73 species on 5%+ of 56 checklists May 15-21: 74 species on 5%+ of 40 checklists May 22-31: 76 species on 5%+ of 40 checklists Jun 1-7: 60 species on 5%+ of 33 checklists Jun 8-14: 63 species on 5%+ of 13 checklists Jun 15-21: 63 species on 5%+ of 20 checklists Jun 22-30: 57 species on 5%+ of 21 checklists Jul 1-7: 68 species on 5%+ of 15 checklists Jul 8-14: 63 species on 5%+ of 20 checklists Jul 15-21: 52 species on 5%+ of 13 checklists Jul 22-31: 66 species on 5%+ of 17 checklists Aug 1-7: 57 species on 5%+ of 16 checklists Aug 8-14: 42 species on 5%+ of 11 checklists Aug 15-21: 59 species on 5%+ of 13 checklists Aug 22-31: 48 species on 5%+ of 27 checklists Sep 1-7: 53 species on 5%+ of 22 checklists Sep 8-14: 56 species on 5%+ of 10 checklists Sep 15-21: 70 species on 5%+ of 19 checklists Sep 22-30: 61 species on 5%+ of 35 checklists Oct 1-7: 47 species on 5%+ of 23 checklists Oct 8-14: 54 species on 5%+ of 31 checklists Oct 15-21: 40 species on 5%+ of 21 checklists Oct 22-31: 41 species on 5%+ of 26 checklists Nov 1-7: 55 species on 5%+ of 14 checklists Nov 8-14: 38 species on 5%+ of 144 checklists Nov 15-21: 44 species on 5%+ of 64 checklists Nov 22-30: 51 species on 5%+ of 39 checklists Dec 1-7: 54 species on 5%+ of 20 checklists Dec 8-14: 53 species on 5%+ of 33 checklists Dec 15-21: 45 species on 5%+ of 26 checklists Dec 22-31: 46 species on 5%+ of 43 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 Gadwall 88% 2 Mallard 80% 3 Canada Goose 67% 4 Black-capped Chickadee 58% 5 Ring-billed Gull 58% 6 Northern Flicker 56% 7 Belted Kingfisher 54% 8 American Wigeon 53% 9 Song Sparrow 52% 10 Red-winged Blackbird 44% 11 American Robin 43% 12 Blue Jay 43% 13 European Starling 43% 14 Least Bittern 42% 15 Red-tailed Hawk 39% 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 .
Gadwall88%
Mallard80%
Canada Goose67%
Black-capped Chickadee58%
Ring-billed Gull58%
Northern Flicker56%
Belted Kingfisher54%
American Wigeon53%
Song Sparrow52%
Red-winged Blackbird44%
American Robin43%
Blue Jay43%
European Starling43%
Least Bittern42%
Red-tailed Hawk39%