Birding spot · Adams County, Colorado
Birding at Lake Sangraco: What You'll See Each Week In November, the birds most often reported at Lake Sangraco are Mallard (98%), Gadwall (80%), and Northern Shoveler (79%). It is busiest in spring, when 66 species turn up on at least 1 in 20 checklists, and species counts peak in the second week of May (71 species). 137 species have been reported here across 1,250 complete checklists from 244 birders.
Species by week 0 20 40 60 80 Jan 1-7: 44 species on 5%+ of 19 checklists Jan 8-14: 41 species on 5%+ of 13 checklists Jan 15-21: 50 species on 5%+ of 18 checklists Jan 22-31: 40 species on 5%+ of 22 checklists Feb 1-7: 52 species on 5%+ of 13 checklists Feb 8-14: 50 species on 5%+ of 20 checklists Feb 15-21: 45 species on 5%+ of 19 checklists Feb 22-28: 42 species on 5%+ of 21 checklists Mar 1-7: 41 species on 5%+ of 26 checklists Mar 8-14: 47 species on 5%+ of 16 checklists Mar 15-21: 50 species on 5%+ of 20 checklists Mar 22-31: 45 species on 5%+ of 40 checklists Apr 1-7: 54 species on 5%+ of 30 checklists Apr 8-14: 55 species on 5%+ of 38 checklists Apr 15-21: 67 species on 5%+ of 40 checklists Apr 22-30: 63 species on 5%+ of 61 checklists May 1-7: 63 species on 5%+ of 50 checklists May 8-14: 71 species on 5%+ of 56 checklists May 15-21: 69 species on 5%+ of 43 checklists May 22-31: 67 species on 5%+ of 38 checklists Jun 1-7: 45 species on 5%+ of 26 checklists Jun 8-14: 41 species on 5%+ of 23 checklists Jun 15-21: 40 species on 5%+ of 27 checklists Jun 22-30: 43 species on 5%+ of 27 checklists Jul 1-7: 53 species on 5%+ of 20 checklists Jul 8-14: 45 species on 5%+ of 18 checklists Jul 15-21: 56 species on 5%+ of 20 checklists Jul 22-31: 36 species on 5%+ of 24 checklists Aug 1-7: 44 species on 5%+ of 12 checklists Aug 8-14: 47 species on 5%+ of 16 checklists Aug 15-21: 38 species on 5%+ of 21 checklists Aug 22-31: 44 species on 5%+ of 26 checklists Sep 1-7: 40 species on 5%+ of 21 checklists Sep 8-14: low data (8 checklists) Sep 15-21: 59 species on 5%+ of 17 checklists Sep 22-30: 37 species on 5%+ of 41 checklists Oct 1-7: 45 species on 5%+ of 37 checklists Oct 8-14: 38 species on 5%+ of 21 checklists Oct 15-21: 43 species on 5%+ of 25 checklists Oct 22-31: 38 species on 5%+ of 25 checklists Nov 1-7: 52 species on 5%+ of 20 checklists Nov 8-14: 41 species on 5%+ of 30 checklists Nov 15-21: 38 species on 5%+ of 25 checklists Nov 22-30: 39 species on 5%+ of 23 checklists Dec 1-7: 39 species on 5%+ of 22 checklists Dec 8-14: 35 species on 5%+ of 27 checklists Dec 15-21: 37 species on 5%+ of 22 checklists Dec 22-31: 37 species on 5%+ of 23 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 Mallard 98% 2 Gadwall 80% 3 Northern Shoveler 79% 4 Black-billed Magpie 73% 5 Bufflehead 70% 6 Northern Flicker 64% 7 Green-winged Teal 56% 8 Ring-necked Duck 56% 9 Canada Goose 55% 10 Hooded Merganser 51% 11 Mourning Dove 48% 12 American Coot 46% 13 American Wigeon 46% 14 Killdeer 45% 15 Rock Pigeon 45% 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 .
Mallard98%
Gadwall80%
Northern Shoveler79%
Black-billed Magpie73%
Bufflehead70%
Northern Flicker64%
Green-winged Teal56%
Ring-necked Duck56%
Canada Goose55%
Hooded Merganser51%
Mourning Dove48%
American Coot46%
American Wigeon46%
Killdeer45%
Rock Pigeon45%