Birding spot · El Paso County, Colorado
Birding at Valley Reservoir Number One (Pigs Eye): What You'll See Each Week In November, the birds most often reported at Valley Reservoir Number One (Pigs Eye) are Dark-eyed Junco (96%), Black-billed Magpie (89%), and Black-capped Chickadee (89%). It is busiest in spring, when 65 species turn up on at least 1 in 20 checklists, and species counts peak in the second week of May (70 species). 150 species have been reported here across 1,702 complete checklists from 323 birders.
Species by week 0 20 40 60 80 Jan 1-7: 27 species on 5%+ of 26 checklists Jan 8-14: 35 species on 5%+ of 20 checklists Jan 15-21: 37 species on 5%+ of 17 checklists Jan 22-31: 28 species on 5%+ of 31 checklists Feb 1-7: 31 species on 5%+ of 19 checklists Feb 8-14: 32 species on 5%+ of 16 checklists Feb 15-21: 32 species on 5%+ of 28 checklists Feb 22-28: 26 species on 5%+ of 22 checklists Mar 1-7: 40 species on 5%+ of 19 checklists Mar 8-14: 32 species on 5%+ of 33 checklists Mar 15-21: 35 species on 5%+ of 28 checklists Mar 22-31: 35 species on 5%+ of 52 checklists Apr 1-7: 46 species on 5%+ of 40 checklists Apr 8-14: 40 species on 5%+ of 43 checklists Apr 15-21: 48 species on 5%+ of 30 checklists Apr 22-30: 48 species on 5%+ of 69 checklists May 1-7: 64 species on 5%+ of 68 checklists May 8-14: 70 species on 5%+ of 76 checklists May 15-21: 64 species on 5%+ of 83 checklists May 22-31: 70 species on 5%+ of 92 checklists Jun 1-7: 50 species on 5%+ of 33 checklists Jun 8-14: 48 species on 5%+ of 21 checklists Jun 15-21: low data (8 checklists) Jun 22-30: 55 species on 5%+ of 14 checklists Jul 1-7: 59 species on 5%+ of 20 checklists Jul 8-14: 50 species on 5%+ of 40 checklists Jul 15-21: 49 species on 5%+ of 24 checklists Jul 22-31: 50 species on 5%+ of 30 checklists Aug 1-7: 59 species on 5%+ of 14 checklists Aug 8-14: low data (6 checklists) Aug 15-21: 51 species on 5%+ of 21 checklists Aug 22-31: 58 species on 5%+ of 28 checklists Sep 1-7: 51 species on 5%+ of 32 checklists Sep 8-14: 66 species on 5%+ of 71 checklists Sep 15-21: 56 species on 5%+ of 63 checklists Sep 22-30: 56 species on 5%+ of 38 checklists Oct 1-7: 48 species on 5%+ of 67 checklists Oct 8-14: 45 species on 5%+ of 50 checklists Oct 15-21: 42 species on 5%+ of 59 checklists Oct 22-31: 36 species on 5%+ of 37 checklists Nov 1-7: 31 species on 5%+ of 26 checklists Nov 8-14: 36 species on 5%+ of 37 checklists Nov 15-21: 35 species on 5%+ of 48 checklists Nov 22-30: 33 species on 5%+ of 26 checklists Dec 1-7: 36 species on 5%+ of 19 checklists Dec 8-14: low data (9 checklists) Dec 15-21: 33 species on 5%+ of 13 checklists Dec 22-31: 31 species on 5%+ of 36 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 Dark-eyed Junco 96% 2 Black-billed Magpie 89% 3 Black-capped Chickadee 89% 4 Northern Flicker 83% 5 American Robin 82% 6 Blue Jay 81% 7 Spotted Towhee 79% 8 House Finch 74% 9 Townsend's Solitaire 74% 10 Mallard 73% 11 Woodhouse's Scrub-Jay 71% 12 Song Sparrow 64% 13 White-breasted Nuthatch 64% 14 Mountain Chickadee 58% 15 White-crowned Sparrow 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 .
Dark-eyed Junco96%
Black-billed Magpie89%
Black-capped Chickadee89%
Northern Flicker83%
American Robin82%
Blue Jay81%
Spotted Towhee79%
House Finch74%
Townsend's Solitaire74%
Mallard73%
Woodhouse's Scrub-Jay71%
Song Sparrow64%
White-breasted Nuthatch64%
Mountain Chickadee58%
White-crowned Sparrow54%