Birding spot · Boulder County, Colorado
Birding at Pella Crossing: What You'll See Each Week In November, the birds most often reported at Pella Crossing are Ring-necked Duck (94%), American Wigeon (92%), and Canada Goose (86%). It is busiest in spring, when 73 species turn up on at least 1 in 20 checklists, and species counts peak in the second week of May (72 species). 204 species have been reported here across 3,697 complete checklists from 858 birders.
Species by week 0 20 40 60 80 Jan 1-7: 48 species on 5%+ of 122 checklists Jan 8-14: 48 species on 5%+ of 149 checklists Jan 15-21: 48 species on 5%+ of 144 checklists Jan 22-31: 50 species on 5%+ of 108 checklists Feb 1-7: 47 species on 5%+ of 54 checklists Feb 8-14: 50 species on 5%+ of 57 checklists Feb 15-21: 49 species on 5%+ of 71 checklists Feb 22-28: 49 species on 5%+ of 95 checklists Mar 1-7: 46 species on 5%+ of 77 checklists Mar 8-14: 49 species on 5%+ of 62 checklists Mar 15-21: 46 species on 5%+ of 63 checklists Mar 22-31: 49 species on 5%+ of 89 checklists Apr 1-7: 57 species on 5%+ of 80 checklists Apr 8-14: 53 species on 5%+ of 63 checklists Apr 15-21: 59 species on 5%+ of 58 checklists Apr 22-30: 61 species on 5%+ of 70 checklists May 1-7: 69 species on 5%+ of 96 checklists May 8-14: 72 species on 5%+ of 125 checklists May 15-21: 67 species on 5%+ of 101 checklists May 22-31: 62 species on 5%+ of 190 checklists Jun 1-7: 58 species on 5%+ of 85 checklists Jun 8-14: 55 species on 5%+ of 50 checklists Jun 15-21: 59 species on 5%+ of 106 checklists Jun 22-30: 54 species on 5%+ of 74 checklists Jul 1-7: 57 species on 5%+ of 67 checklists Jul 8-14: 64 species on 5%+ of 53 checklists Jul 15-21: 63 species on 5%+ of 53 checklists Jul 22-31: 53 species on 5%+ of 81 checklists Aug 1-7: 58 species on 5%+ of 38 checklists Aug 8-14: 46 species on 5%+ of 44 checklists Aug 15-21: 54 species on 5%+ of 39 checklists Aug 22-31: 45 species on 5%+ of 61 checklists Sep 1-7: 50 species on 5%+ of 41 checklists Sep 8-14: 59 species on 5%+ of 47 checklists Sep 15-21: 56 species on 5%+ of 57 checklists Sep 22-30: 54 species on 5%+ of 64 checklists Oct 1-7: 58 species on 5%+ of 51 checklists Oct 8-14: 58 species on 5%+ of 52 checklists Oct 15-21: 50 species on 5%+ of 46 checklists Oct 22-31: 54 species on 5%+ of 116 checklists Nov 1-7: 50 species on 5%+ of 89 checklists Nov 8-14: 47 species on 5%+ of 66 checklists Nov 15-21: 50 species on 5%+ of 51 checklists Nov 22-30: 53 species on 5%+ of 70 checklists Dec 1-7: 48 species on 5%+ of 64 checklists Dec 8-14: 49 species on 5%+ of 82 checklists Dec 15-21: 50 species on 5%+ of 77 checklists Dec 22-31: 46 species on 5%+ of 99 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-necked Duck 94% 2 American Wigeon 92% 3 Canada Goose 86% 4 Mallard 80% 5 Northern Flicker 72% 6 Red-winged Blackbird 71% 7 Pied-billed Grebe 68% 8 Blue Jay 65% 9 American Coot 64% 10 White-crowned Sparrow 61% 11 European Starling 59% 12 American Robin 58% 13 Song Sparrow 57% 14 Black-capped Chickadee 57% 15 Ring-billed Gull 54% 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-necked Duck94%
American Wigeon92%
Canada Goose86%
Mallard80%
Northern Flicker72%
Red-winged Blackbird71%
Pied-billed Grebe68%
Blue Jay65%
American Coot64%
White-crowned Sparrow61%
European Starling59%
American Robin58%
Song Sparrow57%
Black-capped Chickadee57%
Ring-billed Gull54%