Birding spot · Douglas County, Colorado
Birding at Chatfield Lake: What You'll See Each Week In November, the birds most often reported at Chatfield Lake are Ring-billed Gull (94%), Canada Goose (72%), and Black-billed Magpie (68%). It is busiest in spring, when 72 species turn up on at least 1 in 20 checklists, and species counts peak in late April (73 species). 194 species have been reported here across 2,766 complete checklists from 667 birders.
Species by week 0 20 40 60 80 Jan 1-7: 40 species on 5%+ of 31 checklists Jan 8-14: 29 species on 5%+ of 17 checklists Jan 15-21: 32 species on 5%+ of 15 checklists Jan 22-31: 25 species on 5%+ of 14 checklists Feb 1-7: low data (9 checklists) Feb 8-14: low data (5 checklists) Feb 15-21: 26 species on 5%+ of 13 checklists Feb 22-28: 50 species on 5%+ of 12 checklists Mar 1-7: 39 species on 5%+ of 14 checklists Mar 8-14: 43 species on 5%+ of 26 checklists Mar 15-21: 40 species on 5%+ of 25 checklists Mar 22-31: 44 species on 5%+ of 49 checklists Apr 1-7: 43 species on 5%+ of 34 checklists Apr 8-14: 48 species on 5%+ of 36 checklists Apr 15-21: 59 species on 5%+ of 93 checklists Apr 22-30: 73 species on 5%+ of 149 checklists May 1-7: 72 species on 5%+ of 81 checklists May 8-14: 64 species on 5%+ of 42 checklists May 15-21: 69 species on 5%+ of 32 checklists May 22-31: 50 species on 5%+ of 25 checklists Jun 1-7: 58 species on 5%+ of 19 checklists Jun 8-14: low data (4 checklists) Jun 15-21: low data (6 checklists) Jun 22-30: 47 species on 5%+ of 13 checklists Jul 1-7: 47 species on 5%+ of 11 checklists Jul 8-14: 53 species on 5%+ of 16 checklists Jul 15-21: 51 species on 5%+ of 14 checklists Jul 22-31: 54 species on 5%+ of 17 checklists Aug 1-7: 48 species on 5%+ of 35 checklists Aug 8-14: 66 species on 5%+ of 40 checklists Aug 15-21: 56 species on 5%+ of 57 checklists Aug 22-31: 56 species on 5%+ of 237 checklists Sep 1-7: 50 species on 5%+ of 158 checklists Sep 8-14: 61 species on 5%+ of 229 checklists Sep 15-21: 46 species on 5%+ of 180 checklists Sep 22-30: 57 species on 5%+ of 130 checklists Oct 1-7: 49 species on 5%+ of 72 checklists Oct 8-14: 41 species on 5%+ of 71 checklists Oct 15-21: 46 species on 5%+ of 101 checklists Oct 22-31: 46 species on 5%+ of 138 checklists Nov 1-7: 48 species on 5%+ of 124 checklists Nov 8-14: 45 species on 5%+ of 88 checklists Nov 15-21: 49 species on 5%+ of 52 checklists Nov 22-30: 48 species on 5%+ of 84 checklists Dec 1-7: 41 species on 5%+ of 43 checklists Dec 8-14: 43 species on 5%+ of 32 checklists Dec 15-21: 44 species on 5%+ of 39 checklists Dec 22-31: 41 species on 5%+ of 34 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 Ring-billed Gull 94% 2 Canada Goose 72% 3 Black-billed Magpie 68% 4 Mallard 61% 5 American Coot 53% 6 American White Pelican 50% 7 Common Merganser 49% 8 Common Loon 47% 9 Western Grebe 38% 10 Double-crested Cormorant 35% 11 American Crow 35% 12 Bonaparte's Gull 34% 13 Pied-billed Grebe 33% 14 American Herring Gull 32% 15 Common Goldeneye 29% 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 .
Ring-billed Gull94%
Canada Goose72%
Black-billed Magpie68%
Mallard61%
American Coot53%
American White Pelican50%
Common Merganser49%
Common Loon47%
Western Grebe38%
Double-crested Cormorant35%
American Crow35%
Bonaparte's Gull34%
Pied-billed Grebe33%
American Herring Gull32%
Common Goldeneye29%