WhenToBird

Birding spot · Fairfax County, Virginia

Birding at Elizabeth Hartwell Mason Neck National Wildlife Refuge: What You'll See Each Week

In November, the birds most often reported at Elizabeth Hartwell Mason Neck National Wildlife Refuge are American Black Duck (93%), Mallard (86%), and Ring-billed Gull (72%). It is busiest in spring, when 90 species turn up on at least 1 in 20 checklists, and species counts peak in the second week of May (90 species). 163 species have been reported here across 863 complete checklists from 339 birders.

Species by week

020406080100Jan 1-7: 50 species on 5%+ of 41 checklistsJan 8-14: 50 species on 5%+ of 34 checklistsJan 15-21: 44 species on 5%+ of 25 checklistsJan 22-31: 57 species on 5%+ of 28 checklistsFeb 1-7: 57 species on 5%+ of 19 checklistsFeb 8-14: 60 species on 5%+ of 18 checklistsFeb 15-21: 45 species on 5%+ of 21 checklistsFeb 22-28: 53 species on 5%+ of 27 checklistsMar 1-7: 52 species on 5%+ of 28 checklistsMar 8-14: 46 species on 5%+ of 10 checklistsMar 15-21: 61 species on 5%+ of 16 checklistsMar 22-31: 62 species on 5%+ of 22 checklistsApr 1-7: 74 species on 5%+ of 19 checklistsApr 8-14: 63 species on 5%+ of 22 checklistsApr 15-21: 66 species on 5%+ of 22 checklistsApr 22-30: 75 species on 5%+ of 11 checklistsMay 1-7: 87 species on 5%+ of 13 checklistsMay 8-14: 90 species on 5%+ of 15 checklistsMay 15-21: 78 species on 5%+ of 14 checklistsMay 22-31: 70 species on 5%+ of 19 checklistsJun 1-7: 68 species on 5%+ of 12 checklistsJun 8-14: low data (8 checklists)Jun 15-21: 70 species on 5%+ of 20 checklistsJun 22-30: 58 species on 5%+ of 22 checklistsJul 1-7: 57 species on 5%+ of 22 checklistsJul 8-14: 57 species on 5%+ of 21 checklistsJul 15-21: 59 species on 5%+ of 10 checklistsJul 22-31: low data (9 checklists)Aug 1-7: low data (8 checklists)Aug 8-14: low data (3 checklists)Aug 15-21: low data (8 checklists)Aug 22-31: 57 species on 5%+ of 11 checklistsSep 1-7: low data (4 checklists)Sep 8-14: low data (4 checklists)Sep 15-21: low data (6 checklists)Sep 22-30: 73 species on 5%+ of 14 checklistsOct 1-7: low data (9 checklists)Oct 8-14: 70 species on 5%+ of 16 checklistsOct 15-21: 65 species on 5%+ of 26 checklistsOct 22-31: 61 species on 5%+ of 26 checklistsNov 1-7: 67 species on 5%+ of 14 checklistsNov 8-14: 72 species on 5%+ of 20 checklistsNov 15-21: 63 species on 5%+ of 32 checklistsNov 22-30: 59 species on 5%+ of 38 checklistsDec 1-7: 56 species on 5%+ of 18 checklistsDec 8-14: 63 species on 5%+ of 12 checklistsDec 15-21: 62 species on 5%+ of 11 checklistsDec 22-31: 63 species on 5%+ of 35 checklistsJanFebMarAprMayJunJulAugSepOctNovDec
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. 1American Black Duck93%
  2. 2Mallard86%
  3. 3Ring-billed Gull72%
  4. 4Carolina Chickadee69%
  5. 5Tundra Swan69%
  6. 6Tufted Titmouse67%
  7. 7Bald Eagle65%
  8. 8Hermit Thrush63%
  9. 9White-breasted Nuthatch63%
  10. 10American Crow63%
  11. 11Blue Jay61%
  12. 12Carolina Wren60%
  13. 13Red-bellied Woodpecker58%
  14. 14Red-winged Blackbird57%
  15. 15Song Sparrow52%

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

Winter 55 species

  1. Tundra Swan90%
  2. American Black Duck84%
  3. Mallard82%
  4. Bald Eagle72%
  5. Tufted Titmouse68%

Spring 90 species

  1. Tufted Titmouse85%
  2. Red-winged Blackbird82%
  3. American Crow78%
  4. Carolina Chickadee77%
  5. Red-bellied Woodpecker75%

Summer 67 species

  1. Red-winged Blackbird99%
  2. Acadian Flycatcher86%
  3. Eastern Wood-Pewee86%
  4. Red-eyed Vireo86%
  5. Tufted Titmouse85%

Fall 67 species

  1. Blue Jay74%
  2. Tufted Titmouse74%
  3. American Black Duck73%
  4. White-breasted Nuthatch71%
  5. Mallard70%

Specialties

Birds reported far more often here than across Virginia.

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.