Birding spot · Jefferson County, Colorado
Birding at Chatfield Lake (Deer Creek): What You'll See Each Week In November, the birds most often reported at Chatfield Lake (Deer Creek) are American Coot (76%), Ring-billed Gull (76%), and Canada Goose (73%). It is busiest in spring, when 77 species turn up on at least 1 in 20 checklists, and species counts peak in mid May (105 species). 223 species have been reported here across 1,245 complete checklists from 403 birders.
Species by week 0 25 50 75 100 125 Jan 1-7: 50 species on 5%+ of 35 checklists Jan 8-14: 52 species on 5%+ of 39 checklists Jan 15-21: 47 species on 5%+ of 13 checklists Jan 22-31: 47 species on 5%+ of 18 checklists Feb 1-7: 45 species on 5%+ of 14 checklists Feb 8-14: 46 species on 5%+ of 14 checklists Feb 15-21: low data (5 checklists) Feb 22-28: 48 species on 5%+ of 19 checklists Mar 1-7: 40 species on 5%+ of 25 checklists Mar 8-14: 45 species on 5%+ of 11 checklists Mar 15-21: 54 species on 5%+ of 16 checklists Mar 22-31: 60 species on 5%+ of 39 checklists Apr 1-7: 54 species on 5%+ of 47 checklists Apr 8-14: 59 species on 5%+ of 24 checklists Apr 15-21: 74 species on 5%+ of 58 checklists Apr 22-30: 84 species on 5%+ of 51 checklists May 1-7: 84 species on 5%+ of 32 checklists May 8-14: 80 species on 5%+ of 26 checklists May 15-21: 105 species on 5%+ of 20 checklists May 22-31: 73 species on 5%+ of 24 checklists Jun 1-7: 72 species on 5%+ of 21 checklists Jun 8-14: 78 species on 5%+ of 10 checklists Jun 15-21: 65 species on 5%+ of 14 checklists Jun 22-30: 80 species on 5%+ of 16 checklists Jul 1-7: low data (6 checklists) Jul 8-14: 67 species on 5%+ of 10 checklists Jul 15-21: 66 species on 5%+ of 12 checklists Jul 22-31: low data (9 checklists) Aug 1-7: 60 species on 5%+ of 12 checklists Aug 8-14: low data (7 checklists) Aug 15-21: low data (8 checklists) Aug 22-31: 68 species on 5%+ of 48 checklists Sep 1-7: 74 species on 5%+ of 27 checklists Sep 8-14: 60 species on 5%+ of 41 checklists Sep 15-21: 72 species on 5%+ of 39 checklists Sep 22-30: 77 species on 5%+ of 38 checklists Oct 1-7: 89 species on 5%+ of 14 checklists Oct 8-14: 59 species on 5%+ of 26 checklists Oct 15-21: 62 species on 5%+ of 29 checklists Oct 22-31: 65 species on 5%+ of 56 checklists Nov 1-7: 63 species on 5%+ of 56 checklists Nov 8-14: 60 species on 5%+ of 58 checklists Nov 15-21: 49 species on 5%+ of 22 checklists Nov 22-30: 49 species on 5%+ of 43 checklists Dec 1-7: 49 species on 5%+ of 27 checklists Dec 8-14: 62 species on 5%+ of 18 checklists Dec 15-21: 41 species on 5%+ of 23 checklists Dec 22-31: 47 species on 5%+ of 25 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 Coot 76% 2 Ring-billed Gull 76% 3 Canada Goose 73% 4 Black-billed Magpie 62% 5 Mallard 61% 6 Western Grebe 59% 7 American Crow 44% 8 Northern Flicker 41% 9 Red-tailed Hawk 40% 10 Common Merganser 40% 11 Common Loon 39% 12 Gadwall 37% 13 American White Pelican 37% 14 Pied-billed Grebe 35% 15 Eared Grebe 34% 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 Coot76%
Ring-billed Gull76%
Canada Goose73%
Black-billed Magpie62%
Mallard61%
Western Grebe59%
American Crow44%
Northern Flicker41%
Red-tailed Hawk40%
Common Merganser40%
Common Loon39%
Gadwall37%
American White Pelican37%
Pied-billed Grebe35%
Eared Grebe34%