Birding spot · Berks County, Pennsylvania
Birding at Lake Ontelaunee: What You'll See Each Week In November, the birds most often reported at Lake Ontelaunee are Great Blue Heron (73%), Ring-billed Gull (55%), and Mallard (54%). It is busiest in spring, when 81 species turn up on at least 1 in 20 checklists, and species counts peak in late April (97 species). 177 species have been reported here across 1,782 complete checklists from 240 birders.
Species by week 0 20 40 60 80 100 Jan 1-7: 45 species on 5%+ of 51 checklists Jan 8-14: 42 species on 5%+ of 43 checklists Jan 15-21: 66 species on 5%+ of 40 checklists Jan 22-31: 40 species on 5%+ of 32 checklists Feb 1-7: 50 species on 5%+ of 30 checklists Feb 8-14: 52 species on 5%+ of 48 checklists Feb 15-21: 48 species on 5%+ of 54 checklists Feb 22-28: 61 species on 5%+ of 68 checklists Mar 1-7: 59 species on 5%+ of 80 checklists Mar 8-14: 61 species on 5%+ of 63 checklists Mar 15-21: 58 species on 5%+ of 69 checklists Mar 22-31: 71 species on 5%+ of 88 checklists Apr 1-7: 70 species on 5%+ of 65 checklists Apr 8-14: 77 species on 5%+ of 56 checklists Apr 15-21: 73 species on 5%+ of 62 checklists Apr 22-30: 97 species on 5%+ of 39 checklists May 1-7: 87 species on 5%+ of 46 checklists May 8-14: 80 species on 5%+ of 35 checklists May 15-21: 68 species on 5%+ of 27 checklists May 22-31: 77 species on 5%+ of 32 checklists Jun 1-7: 54 species on 5%+ of 21 checklists Jun 8-14: 59 species on 5%+ of 44 checklists Jun 15-21: 67 species on 5%+ of 38 checklists Jun 22-30: 75 species on 5%+ of 20 checklists Jul 1-7: 68 species on 5%+ of 16 checklists Jul 8-14: 67 species on 5%+ of 15 checklists Jul 15-21: 70 species on 5%+ of 18 checklists Jul 22-31: 67 species on 5%+ of 30 checklists Aug 1-7: 58 species on 5%+ of 26 checklists Aug 8-14: 50 species on 5%+ of 32 checklists Aug 15-21: 58 species on 5%+ of 19 checklists Aug 22-31: 66 species on 5%+ of 19 checklists Sep 1-7: low data (9 checklists) Sep 8-14: 50 species on 5%+ of 25 checklists Sep 15-21: 79 species on 5%+ of 14 checklists Sep 22-30: 88 species on 5%+ of 17 checklists Oct 1-7: 72 species on 5%+ of 19 checklists Oct 8-14: 64 species on 5%+ of 30 checklists Oct 15-21: 69 species on 5%+ of 18 checklists Oct 22-31: 65 species on 5%+ of 37 checklists Nov 1-7: 63 species on 5%+ of 40 checklists Nov 8-14: 62 species on 5%+ of 27 checklists Nov 15-21: 59 species on 5%+ of 38 checklists Nov 22-30: 52 species on 5%+ of 50 checklists Dec 1-7: 49 species on 5%+ of 35 checklists Dec 8-14: 49 species on 5%+ of 40 checklists Dec 15-21: 42 species on 5%+ of 24 checklists Dec 22-31: 44 species on 5%+ of 33 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 Blue Heron 73% 2 Ring-billed Gull 55% 3 Mallard 54% 4 Double-crested Cormorant 53% 5 Canada Goose 52% 6 Red-bellied Woodpecker 43% 7 Turkey Vulture 42% 8 Belted Kingfisher 41% 9 Bufflehead 40% 10 American Black Duck 39% 11 Pied-billed Grebe 38% 12 Hooded Merganser 37% 13 Carolina Wren 33% 14 White-breasted Nuthatch 31% 15 American Crow 30% 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 Pennsylvania.
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 Blue Heron73%
Ring-billed Gull55%
Mallard54%
Double-crested Cormorant53%
Canada Goose52%
Red-bellied Woodpecker43%
Turkey Vulture42%
Belted Kingfisher41%
Bufflehead40%
American Black Duck39%
Pied-billed Grebe38%
Hooded Merganser37%
Carolina Wren33%
White-breasted Nuthatch31%
American Crow30%