Birding spot · San Diego County, California
Birding at Quivira Basin: What You'll See Each Week In November, the birds most often reported at Quivira Basin are American Crow (79%), Great Egret (78%), and Western Gull (78%). It is busiest in winter, when 91 species turn up on at least 1 in 20 checklists, and species counts peak in mid November (95 species). 257 species have been reported here across 10,306 complete checklists from 3,509 birders.
Species by week 0 20 40 60 80 100 Jan 1-7: 87 species on 5%+ of 336 checklists Jan 8-14: 87 species on 5%+ of 216 checklists Jan 15-21: 92 species on 5%+ of 211 checklists Jan 22-31: 87 species on 5%+ of 281 checklists Feb 1-7: 87 species on 5%+ of 159 checklists Feb 8-14: 87 species on 5%+ of 175 checklists Feb 15-21: 90 species on 5%+ of 315 checklists Feb 22-28: 89 species on 5%+ of 499 checklists Mar 1-7: 85 species on 5%+ of 254 checklists Mar 8-14: 85 species on 5%+ of 173 checklists Mar 15-21: 88 species on 5%+ of 209 checklists Mar 22-31: 82 species on 5%+ of 210 checklists Apr 1-7: 83 species on 5%+ of 185 checklists Apr 8-14: 76 species on 5%+ of 141 checklists Apr 15-21: 74 species on 5%+ of 109 checklists Apr 22-30: 74 species on 5%+ of 232 checklists May 1-7: 73 species on 5%+ of 164 checklists May 8-14: 72 species on 5%+ of 157 checklists May 15-21: 62 species on 5%+ of 90 checklists May 22-31: 64 species on 5%+ of 227 checklists Jun 1-7: 58 species on 5%+ of 134 checklists Jun 8-14: 53 species on 5%+ of 108 checklists Jun 15-21: 54 species on 5%+ of 103 checklists Jun 22-30: 54 species on 5%+ of 152 checklists Jul 1-7: 58 species on 5%+ of 152 checklists Jul 8-14: 58 species on 5%+ of 175 checklists Jul 15-21: 56 species on 5%+ of 188 checklists Jul 22-31: 61 species on 5%+ of 251 checklists Aug 1-7: 62 species on 5%+ of 184 checklists Aug 8-14: 59 species on 5%+ of 213 checklists Aug 15-21: 62 species on 5%+ of 213 checklists Aug 22-31: 67 species on 5%+ of 316 checklists Sep 1-7: 63 species on 5%+ of 275 checklists Sep 8-14: 69 species on 5%+ of 243 checklists Sep 15-21: 70 species on 5%+ of 248 checklists Sep 22-30: 70 species on 5%+ of 226 checklists Oct 1-7: 75 species on 5%+ of 189 checklists Oct 8-14: 78 species on 5%+ of 256 checklists Oct 15-21: 78 species on 5%+ of 221 checklists Oct 22-31: 84 species on 5%+ of 360 checklists Nov 1-7: 80 species on 5%+ of 267 checklists Nov 8-14: 86 species on 5%+ of 263 checklists Nov 15-21: 95 species on 5%+ of 135 checklists Nov 22-30: 91 species on 5%+ of 276 checklists Dec 1-7: 85 species on 5%+ of 194 checklists Dec 8-14: 93 species on 5%+ of 150 checklists Dec 15-21: 83 species on 5%+ of 145 checklists Dec 22-31: 88 species on 5%+ of 326 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 American Crow 79% 2 Great Egret 78% 3 Western Gull 78% 4 Great Blue Heron 77% 5 Marbled Godwit 77% 6 Willet 76% 7 Long-billed Curlew 72% 8 Snowy Egret 72% 9 Black-bellied Plover 70% 10 Brant 64% 11 Osprey 62% 12 Rock Pigeon 62% 13 Yellow-rumped Warbler 60% 14 Brown Pelican 58% 15 Black Phoebe 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 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 .
American Crow79%
Great Egret78%
Western Gull78%
Great Blue Heron77%
Marbled Godwit77%
Willet76%
Long-billed Curlew72%
Snowy Egret72%
Black-bellied Plover70%
Brant64%
Osprey62%
Rock Pigeon62%
Yellow-rumped Warbler60%
Brown Pelican58%
Black Phoebe54%