Birding spot · Santa Clara County, California
Birding at Los Alamitos Percolation Ponds: What You'll See Each Week In November, the birds most often reported at Los Alamitos Percolation Ponds are Anna's Hummingbird (93%), Yellow-rumped Warbler (91%), and Black Phoebe (91%). It is busiest in fall, when 80 species turn up on at least 1 in 20 checklists, and species counts peak in early December (88 species). 161 species have been reported here across 2,046 complete checklists from 368 birders.
Species by week 0 20 40 60 80 100 Jan 1-7: 70 species on 5%+ of 77 checklists Jan 8-14: 69 species on 5%+ of 43 checklists Jan 15-21: 75 species on 5%+ of 58 checklists Jan 22-31: 72 species on 5%+ of 111 checklists Feb 1-7: 67 species on 5%+ of 41 checklists Feb 8-14: 68 species on 5%+ of 45 checklists Feb 15-21: 66 species on 5%+ of 46 checklists Feb 22-28: 73 species on 5%+ of 55 checklists Mar 1-7: 74 species on 5%+ of 67 checklists Mar 8-14: 68 species on 5%+ of 49 checklists Mar 15-21: 74 species on 5%+ of 37 checklists Mar 22-31: 72 species on 5%+ of 61 checklists Apr 1-7: 75 species on 5%+ of 37 checklists Apr 8-14: 74 species on 5%+ of 73 checklists Apr 15-21: 71 species on 5%+ of 49 checklists Apr 22-30: 72 species on 5%+ of 34 checklists May 1-7: 63 species on 5%+ of 23 checklists May 8-14: 59 species on 5%+ of 21 checklists May 15-21: 70 species on 5%+ of 18 checklists May 22-31: 63 species on 5%+ of 26 checklists Jun 1-7: 61 species on 5%+ of 15 checklists Jun 8-14: 63 species on 5%+ of 12 checklists Jun 15-21: 63 species on 5%+ of 20 checklists Jun 22-30: 55 species on 5%+ of 26 checklists Jul 1-7: 65 species on 5%+ of 18 checklists Jul 8-14: 62 species on 5%+ of 15 checklists Jul 15-21: 62 species on 5%+ of 19 checklists Jul 22-31: 59 species on 5%+ of 34 checklists Aug 1-7: 50 species on 5%+ of 21 checklists Aug 8-14: 53 species on 5%+ of 29 checklists Aug 15-21: 55 species on 5%+ of 45 checklists Aug 22-31: 56 species on 5%+ of 62 checklists Sep 1-7: 64 species on 5%+ of 39 checklists Sep 8-14: 60 species on 5%+ of 39 checklists Sep 15-21: 59 species on 5%+ of 49 checklists Sep 22-30: 72 species on 5%+ of 51 checklists Oct 1-7: 73 species on 5%+ of 34 checklists Oct 8-14: 77 species on 5%+ of 49 checklists Oct 15-21: 75 species on 5%+ of 73 checklists Oct 22-31: 71 species on 5%+ of 66 checklists Nov 1-7: 72 species on 5%+ of 42 checklists Nov 8-14: 77 species on 5%+ of 32 checklists Nov 15-21: 73 species on 5%+ of 81 checklists Nov 22-30: 73 species on 5%+ of 53 checklists Dec 1-7: 88 species on 5%+ of 36 checklists Dec 8-14: 81 species on 5%+ of 38 checklists Dec 15-21: 70 species on 5%+ of 23 checklists Dec 22-31: 74 species on 5%+ of 54 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 Anna's Hummingbird 93% 2 Yellow-rumped Warbler 91% 3 Black Phoebe 91% 4 American Coot 83% 5 White-crowned Sparrow 83% 6 American Crow 80% 7 House Finch 79% 8 Northern Mockingbird 77% 9 Mallard 76% 10 California Towhee 75% 11 Turkey Vulture 70% 12 Golden-crowned Sparrow 68% 13 Ruby-crowned Kinglet 68% 14 Great Egret 67% 15 Double-crested Cormorant 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 .
Anna's Hummingbird93%
Yellow-rumped Warbler91%
Black Phoebe91%
American Coot83%
White-crowned Sparrow83%
American Crow80%
House Finch79%
Northern Mockingbird77%
Mallard76%
California Towhee75%
Turkey Vulture70%
Golden-crowned Sparrow68%
Ruby-crowned Kinglet68%
Great Egret67%
Double-crested Cormorant64%