Birding spot · Humboldt County, California
Birding at Mad River Slough Wildlife Area: What You'll See Each Week In November, the birds most often reported at Mad River Slough Wildlife Area are Black Phoebe (86%), Song Sparrow (82%), and Common Raven (79%). It is busiest in spring, when 78 species turn up on at least 1 in 20 checklists, and species counts peak in the second week of November (86 species). 209 species have been reported here across 3,102 complete checklists from 625 birders.
Species by week 0 20 40 60 80 100 Jan 1-7: 71 species on 5%+ of 148 checklists Jan 8-14: 68 species on 5%+ of 104 checklists Jan 15-21: 76 species on 5%+ of 86 checklists Jan 22-31: 77 species on 5%+ of 102 checklists Feb 1-7: 76 species on 5%+ of 79 checklists Feb 8-14: 75 species on 5%+ of 89 checklists Feb 15-21: 74 species on 5%+ of 59 checklists Feb 22-28: 67 species on 5%+ of 61 checklists Mar 1-7: 69 species on 5%+ of 68 checklists Mar 8-14: 72 species on 5%+ of 50 checklists Mar 15-21: 74 species on 5%+ of 53 checklists Mar 22-31: 70 species on 5%+ of 70 checklists Apr 1-7: 74 species on 5%+ of 53 checklists Apr 8-14: 73 species on 5%+ of 36 checklists Apr 15-21: 69 species on 5%+ of 131 checklists Apr 22-30: 74 species on 5%+ of 85 checklists May 1-7: 74 species on 5%+ of 88 checklists May 8-14: 68 species on 5%+ of 93 checklists May 15-21: 58 species on 5%+ of 47 checklists May 22-31: 64 species on 5%+ of 40 checklists Jun 1-7: 65 species on 5%+ of 20 checklists Jun 8-14: 47 species on 5%+ of 15 checklists Jun 15-21: 48 species on 5%+ of 11 checklists Jun 22-30: 40 species on 5%+ of 10 checklists Jul 1-7: 47 species on 5%+ of 11 checklists Jul 8-14: 51 species on 5%+ of 12 checklists Jul 15-21: 55 species on 5%+ of 14 checklists Jul 22-31: 58 species on 5%+ of 17 checklists Aug 1-7: 61 species on 5%+ of 19 checklists Aug 8-14: 50 species on 5%+ of 12 checklists Aug 15-21: 63 species on 5%+ of 19 checklists Aug 22-31: 51 species on 5%+ of 60 checklists Sep 1-7: 52 species on 5%+ of 41 checklists Sep 8-14: 51 species on 5%+ of 44 checklists Sep 15-21: 63 species on 5%+ of 61 checklists Sep 22-30: 68 species on 5%+ of 80 checklists Oct 1-7: 73 species on 5%+ of 79 checklists Oct 8-14: 72 species on 5%+ of 70 checklists Oct 15-21: 70 species on 5%+ of 143 checklists Oct 22-31: 82 species on 5%+ of 131 checklists Nov 1-7: 78 species on 5%+ of 108 checklists Nov 8-14: 86 species on 5%+ of 100 checklists Nov 15-21: 80 species on 5%+ of 91 checklists Nov 22-30: 76 species on 5%+ of 81 checklists Dec 1-7: 73 species on 5%+ of 51 checklists Dec 8-14: 78 species on 5%+ of 72 checklists Dec 15-21: 76 species on 5%+ of 83 checklists Dec 22-31: 72 species on 5%+ of 105 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 Black Phoebe 86% 2 Song Sparrow 82% 3 Common Raven 79% 4 Great Egret 76% 5 White-crowned Sparrow 73% 6 European Starling 72% 7 House Finch 71% 8 Savannah Sparrow 71% 9 Cackling Goose 70% 10 Golden-crowned Sparrow 69% 11 Marsh Wren 67% 12 Northern Harrier 67% 13 Red-tailed Hawk 66% 14 Killdeer 65% 15 Red-shouldered Hawk 64% 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 California.
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 .
Black Phoebe86%
Song Sparrow82%
Common Raven79%
Great Egret76%
White-crowned Sparrow73%
European Starling72%
House Finch71%
Savannah Sparrow71%
Cackling Goose70%
Golden-crowned Sparrow69%
Marsh Wren67%
Red-tailed Hawk66%
Killdeer65%
Red-shouldered Hawk64%