Birding spot · Napa County, California
Birding at Fly Bay: What You'll See Each Week In November, the birds most often reported at Fly Bay are Great Egret (95%), Snowy Egret (95%), and Northern Harrier (93%). It is busiest in winter, when 109 species turn up on at least 1 in 20 checklists, and species counts peak in mid April (118 species). 192 species have been reported here across 1,284 complete checklists from 322 birders.
Species by week 0 25 50 75 100 125 Jan 1-7: 114 species on 5%+ of 15 checklists Jan 8-14: 109 species on 5%+ of 18 checklists Jan 15-21: 102 species on 5%+ of 32 checklists Jan 22-31: 107 species on 5%+ of 34 checklists Feb 1-7: 99 species on 5%+ of 29 checklists Feb 8-14: 109 species on 5%+ of 31 checklists Feb 15-21: 97 species on 5%+ of 23 checklists Feb 22-28: 106 species on 5%+ of 31 checklists Mar 1-7: 92 species on 5%+ of 21 checklists Mar 8-14: 96 species on 5%+ of 21 checklists Mar 15-21: 104 species on 5%+ of 12 checklists Mar 22-31: 115 species on 5%+ of 18 checklists Apr 1-7: 111 species on 5%+ of 19 checklists Apr 8-14: 104 species on 5%+ of 13 checklists Apr 15-21: 118 species on 5%+ of 19 checklists Apr 22-30: 90 species on 5%+ of 33 checklists May 1-7: 91 species on 5%+ of 29 checklists May 8-14: 95 species on 5%+ of 20 checklists May 15-21: 74 species on 5%+ of 21 checklists May 22-31: 76 species on 5%+ of 30 checklists Jun 1-7: 75 species on 5%+ of 14 checklists Jun 8-14: 73 species on 5%+ of 16 checklists Jun 15-21: 72 species on 5%+ of 25 checklists Jun 22-30: 77 species on 5%+ of 24 checklists Jul 1-7: 70 species on 5%+ of 33 checklists Jul 8-14: 75 species on 5%+ of 30 checklists Jul 15-21: 79 species on 5%+ of 39 checklists Jul 22-31: 71 species on 5%+ of 45 checklists Aug 1-7: 78 species on 5%+ of 34 checklists Aug 8-14: 74 species on 5%+ of 50 checklists Aug 15-21: 90 species on 5%+ of 36 checklists Aug 22-31: 81 species on 5%+ of 48 checklists Sep 1-7: 79 species on 5%+ of 23 checklists Sep 8-14: 86 species on 5%+ of 23 checklists Sep 15-21: 88 species on 5%+ of 29 checklists Sep 22-30: 87 species on 5%+ of 45 checklists Oct 1-7: 89 species on 5%+ of 22 checklists Oct 8-14: 112 species on 5%+ of 40 checklists Oct 15-21: 103 species on 5%+ of 30 checklists Oct 22-31: 101 species on 5%+ of 34 checklists Nov 1-7: 111 species on 5%+ of 20 checklists Nov 8-14: 100 species on 5%+ of 23 checklists Nov 15-21: 104 species on 5%+ of 22 checklists Nov 22-30: 96 species on 5%+ of 23 checklists Dec 1-7: 102 species on 5%+ of 25 checklists Dec 8-14: 88 species on 5%+ of 21 checklists Dec 15-21: 104 species on 5%+ of 11 checklists Dec 22-31: 107 species on 5%+ of 30 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 Great Egret 95% 2 Snowy Egret 95% 3 Northern Harrier 93% 4 Greater Yellowlegs 92% 5 American Avocet 91% 6 Savannah Sparrow 91% 7 House Finch 90% 8 Song Sparrow 90% 9 Red-tailed Hawk 88% 10 Black-necked Stilt 86% 11 Common Raven 86% 12 Double-crested Cormorant 86% 13 Black Phoebe 85% 14 Least Sandpiper 83% 15 American White Pelican 80% 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 .
Great Egret95%
Snowy Egret95%
Greater Yellowlegs92%
American Avocet91%
Savannah Sparrow91%
House Finch90%
Song Sparrow90%
Red-tailed Hawk88%
Black-necked Stilt86%
Common Raven86%
Double-crested Cormorant86%
Black Phoebe85%
Least Sandpiper83%
American White Pelican80%