Birding spot · Boulder County, Colorado
Birding at Jim Hamm Nature Preserve: What You'll See Each Week In November, the birds most often reported at Jim Hamm Nature Preserve are Red-winged Blackbird (83%), Canada Goose (71%), and Mallard (54%). It is busiest in spring, when 54 species turn up on at least 1 in 20 checklists, and species counts peak in mid May (54 species). 135 species have been reported here across 1,349 complete checklists from 341 birders.
Species by week 0 20 40 60 Jan 1-7: 22 species on 5%+ of 14 checklists Jan 8-14: 31 species on 5%+ of 11 checklists Jan 15-21: 28 species on 5%+ of 12 checklists Jan 22-31: low data (9 checklists) Feb 1-7: low data (9 checklists) Feb 8-14: low data (7 checklists) Feb 15-21: 37 species on 5%+ of 12 checklists Feb 22-28: 30 species on 5%+ of 13 checklists Mar 1-7: 40 species on 5%+ of 14 checklists Mar 8-14: 39 species on 5%+ of 28 checklists Mar 15-21: 42 species on 5%+ of 36 checklists Mar 22-31: 43 species on 5%+ of 70 checklists Apr 1-7: 42 species on 5%+ of 62 checklists Apr 8-14: 50 species on 5%+ of 60 checklists Apr 15-21: 48 species on 5%+ of 50 checklists Apr 22-30: 40 species on 5%+ of 70 checklists May 1-7: 47 species on 5%+ of 51 checklists May 8-14: 49 species on 5%+ of 61 checklists May 15-21: 54 species on 5%+ of 59 checklists May 22-31: 49 species on 5%+ of 39 checklists Jun 1-7: 46 species on 5%+ of 19 checklists Jun 8-14: 44 species on 5%+ of 19 checklists Jun 15-21: 39 species on 5%+ of 27 checklists Jun 22-30: 33 species on 5%+ of 25 checklists Jul 1-7: 42 species on 5%+ of 28 checklists Jul 8-14: 41 species on 5%+ of 15 checklists Jul 15-21: 48 species on 5%+ of 17 checklists Jul 22-31: 39 species on 5%+ of 23 checklists Aug 1-7: 44 species on 5%+ of 14 checklists Aug 8-14: 46 species on 5%+ of 21 checklists Aug 15-21: 45 species on 5%+ of 13 checklists Aug 22-31: 40 species on 5%+ of 22 checklists Sep 1-7: 52 species on 5%+ of 18 checklists Sep 8-14: 41 species on 5%+ of 24 checklists Sep 15-21: 37 species on 5%+ of 30 checklists Sep 22-30: 47 species on 5%+ of 33 checklists Oct 1-7: 40 species on 5%+ of 27 checklists Oct 8-14: 36 species on 5%+ of 22 checklists Oct 15-21: 36 species on 5%+ of 26 checklists Oct 22-31: 37 species on 5%+ of 69 checklists Nov 1-7: 40 species on 5%+ of 30 checklists Nov 8-14: 40 species on 5%+ of 24 checklists Nov 15-21: 34 species on 5%+ of 28 checklists Nov 22-30: 39 species on 5%+ of 30 checklists Dec 1-7: 36 species on 5%+ of 16 checklists Dec 8-14: 33 species on 5%+ of 15 checklists Dec 15-21: 28 species on 5%+ of 12 checklists Dec 22-31: 29 species on 5%+ of 15 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 Red-winged Blackbird 83% 2 Canada Goose 71% 3 Mallard 54% 4 Blue Jay 47% 5 Song Sparrow 47% 6 Cackling Goose 43% 7 House Finch 43% 8 Ring-billed Gull 42% 9 European Starling 37% 10 Eurasian Collared-Dove 36% 11 Northern Flicker 36% 12 American Coot 33% 13 American Wigeon 32% 14 Pied-billed Grebe 32% 15 Ring-necked Duck 30% 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 .
Red-winged Blackbird83%
Canada Goose71%
Mallard54%
Blue Jay47%
Song Sparrow47%
Cackling Goose43%
House Finch43%
Ring-billed Gull42%
European Starling37%
Eurasian Collared-Dove36%
Northern Flicker36%
American Coot33%
American Wigeon32%
Pied-billed Grebe32%
Ring-necked Duck30%