Birding spot · Weld County, Colorado
Birding at Collins: What You'll See Each Week In November, the birds most often reported at Collins are Mallard (97%), Red-winged Blackbird (88%), and Blue Jay (82%). It is busiest in spring, when 72 species turn up on at least 1 in 20 checklists, and species counts peak in early May (77 species). 152 species have been reported here across 990 complete checklists from 234 birders.
Species by week 0 20 40 60 80 Jan 1-7: 55 species on 5%+ of 17 checklists Jan 8-14: 56 species on 5%+ of 19 checklists Jan 15-21: 52 species on 5%+ of 18 checklists Jan 22-31: 52 species on 5%+ of 23 checklists Feb 1-7: 59 species on 5%+ of 19 checklists Feb 8-14: 43 species on 5%+ of 12 checklists Feb 15-21: 60 species on 5%+ of 15 checklists Feb 22-28: 45 species on 5%+ of 22 checklists Mar 1-7: 50 species on 5%+ of 21 checklists Mar 8-14: 39 species on 5%+ of 21 checklists Mar 15-21: 53 species on 5%+ of 31 checklists Mar 22-31: 52 species on 5%+ of 32 checklists Apr 1-7: 50 species on 5%+ of 25 checklists Apr 8-14: 57 species on 5%+ of 29 checklists Apr 15-21: 61 species on 5%+ of 24 checklists Apr 22-30: 76 species on 5%+ of 34 checklists May 1-7: 77 species on 5%+ of 24 checklists May 8-14: 69 species on 5%+ of 26 checklists May 15-21: 77 species on 5%+ of 29 checklists May 22-31: 65 species on 5%+ of 30 checklists Jun 1-7: 58 species on 5%+ of 21 checklists Jun 8-14: 62 species on 5%+ of 10 checklists Jun 15-21: 57 species on 5%+ of 21 checklists Jun 22-30: 56 species on 5%+ of 24 checklists Jul 1-7: 59 species on 5%+ of 12 checklists Jul 8-14: 55 species on 5%+ of 21 checklists Jul 15-21: 61 species on 5%+ of 27 checklists Jul 22-31: 64 species on 5%+ of 26 checklists Aug 1-7: 72 species on 5%+ of 18 checklists Aug 8-14: 66 species on 5%+ of 17 checklists Aug 15-21: 70 species on 5%+ of 18 checklists Aug 22-31: 68 species on 5%+ of 37 checklists Sep 1-7: 53 species on 5%+ of 10 checklists Sep 8-14: 74 species on 5%+ of 14 checklists Sep 15-21: 59 species on 5%+ of 21 checklists Sep 22-30: 63 species on 5%+ of 26 checklists Oct 1-7: 70 species on 5%+ of 13 checklists Oct 8-14: 68 species on 5%+ of 18 checklists Oct 15-21: 53 species on 5%+ of 17 checklists Oct 22-31: 57 species on 5%+ of 17 checklists Nov 1-7: 48 species on 5%+ of 12 checklists Nov 8-14: 57 species on 5%+ of 16 checklists Nov 15-21: 47 species on 5%+ of 12 checklists Nov 22-30: 53 species on 5%+ of 20 checklists Dec 1-7: 52 species on 5%+ of 14 checklists Dec 8-14: 43 species on 5%+ of 23 checklists Dec 15-21: 50 species on 5%+ of 14 checklists Dec 22-31: 50 species on 5%+ of 20 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 97% 2 Red-winged Blackbird 88% 3 Blue Jay 82% 4 Red-tailed Hawk 80% 5 Northern Flicker 78% 6 Song Sparrow 77% 7 Canada Goose 72% 8 House Finch 68% 9 American Goldfinch 65% 10 Bald Eagle 63% 11 Belted Kingfisher 63% 12 White-crowned Sparrow 60% 13 Black-capped Chickadee 57% 14 Western Meadowlark 53% 15 American Kestrel 52% 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 .
Mallard97%
Red-winged Blackbird88%
Blue Jay82%
Red-tailed Hawk80%
Northern Flicker78%
Song Sparrow77%
Canada Goose72%
House Finch68%
American Goldfinch65%
Bald Eagle63%
Belted Kingfisher63%
White-crowned Sparrow60%
Black-capped Chickadee57%
Western Meadowlark53%
American Kestrel52%