Birding spot · Lehigh County, Pennsylvania
Birding at Leaser Lake (formerly Ontelaunee Creek): What You'll See Each Week In November, the birds most often reported at Leaser Lake (formerly Ontelaunee Creek) are American Crow (67%), White-throated Sparrow (65%), and Blue Jay (59%). It is busiest in spring, when 97 species turn up on at least 1 in 20 checklists, and species counts peak in the second week of May (110 species). 220 species have been reported here across 2,277 complete checklists from 306 birders.
Species by week 0 25 50 75 100 125 Jan 1-7: 65 species on 5%+ of 36 checklists Jan 8-14: 47 species on 5%+ of 25 checklists Jan 15-21: 47 species on 5%+ of 21 checklists Jan 22-31: 48 species on 5%+ of 31 checklists Feb 1-7: 48 species on 5%+ of 14 checklists Feb 8-14: 52 species on 5%+ of 14 checklists Feb 15-21: 56 species on 5%+ of 17 checklists Feb 22-28: 59 species on 5%+ of 56 checklists Mar 1-7: 57 species on 5%+ of 66 checklists Mar 8-14: 57 species on 5%+ of 69 checklists Mar 15-21: 59 species on 5%+ of 71 checklists Mar 22-31: 76 species on 5%+ of 137 checklists Apr 1-7: 73 species on 5%+ of 111 checklists Apr 8-14: 75 species on 5%+ of 117 checklists Apr 15-21: 78 species on 5%+ of 99 checklists Apr 22-30: 92 species on 5%+ of 146 checklists May 1-7: 107 species on 5%+ of 116 checklists May 8-14: 110 species on 5%+ of 111 checklists May 15-21: 104 species on 5%+ of 76 checklists May 22-31: 84 species on 5%+ of 71 checklists Jun 1-7: 78 species on 5%+ of 26 checklists Jun 8-14: 67 species on 5%+ of 21 checklists Jun 15-21: 70 species on 5%+ of 30 checklists Jun 22-30: 61 species on 5%+ of 23 checklists Jul 1-7: 62 species on 5%+ of 23 checklists Jul 8-14: 80 species on 5%+ of 20 checklists Jul 15-21: 62 species on 5%+ of 27 checklists Jul 22-31: 77 species on 5%+ of 34 checklists Aug 1-7: 79 species on 5%+ of 19 checklists Aug 8-14: 80 species on 5%+ of 18 checklists Aug 15-21: 57 species on 5%+ of 31 checklists Aug 22-31: 76 species on 5%+ of 38 checklists Sep 1-7: 79 species on 5%+ of 40 checklists Sep 8-14: 65 species on 5%+ of 28 checklists Sep 15-21: 74 species on 5%+ of 35 checklists Sep 22-30: 71 species on 5%+ of 55 checklists Oct 1-7: 83 species on 5%+ of 40 checklists Oct 8-14: 66 species on 5%+ of 41 checklists Oct 15-21: 72 species on 5%+ of 37 checklists Oct 22-31: 70 species on 5%+ of 53 checklists Nov 1-7: 61 species on 5%+ of 38 checklists Nov 8-14: 54 species on 5%+ of 29 checklists Nov 15-21: 54 species on 5%+ of 30 checklists Nov 22-30: 58 species on 5%+ of 39 checklists Dec 1-7: 47 species on 5%+ of 33 checklists Dec 8-14: 58 species on 5%+ of 18 checklists Dec 15-21: 47 species on 5%+ of 10 checklists Dec 22-31: 55 species on 5%+ of 37 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 67% 2 White-throated Sparrow 65% 3 Blue Jay 59% 4 Northern Cardinal 57% 5 Song Sparrow 57% 6 Dark-eyed Junco 55% 7 Downy Woodpecker 53% 8 American Goldfinch 49% 9 Great Blue Heron 45% 10 Carolina Wren 44% 11 White-breasted Nuthatch 44% 12 American Robin 43% 13 Eastern Bluebird 42% 14 Northern Mockingbird 40% 15 Canada Goose 39% 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 .
American Crow67%
White-throated Sparrow65%
Blue Jay59%
Northern Cardinal57%
Song Sparrow57%
Dark-eyed Junco55%
Downy Woodpecker53%
American Goldfinch49%
Great Blue Heron45%
Carolina Wren44%
White-breasted Nuthatch44%
American Robin43%
Eastern Bluebird42%
Northern Mockingbird40%
Canada Goose39%