Featured eBird checklist

Nelson's Sparrow

Ammospiza nelsoni

Belle Isle Marsh--The Key Wildlife Observation Area, Massachusetts

October 12, 2026 · 7:28 AM local time · Reported by Tim E.

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Stylized field-guide illustration of a Nelson's Sparrow
Flockline species illustration. Not the reported individual.

No photos are attached to this species on the featured checklist.

Notes from this checklist

“Annual October migrant. Center of the key”

Historical context

0.8% of complete eBird checklists reported Nelson's Sparrow in Suffolk County, Massachusetts during October 8-14, 2016–2025.

Based on 2,243 complete checklists. County reporting frequency, not a rarity rating.

Reports in 6 of 10 years during October 8-14.

October (whole month): reports in 10 of 10 years.

Year-by-year evidence

Each year uses the same county and seasonal period. An exported zero does not prove absence. Unknown means the species row, frequency or checklist sample is unavailable. These records do not estimate your chance of finding the bird or establish rarity.

Annual eBird exports for October 8-14
Year / sourceResultComplete checklists
2016Exported zero95
2017Reported113
2018Reported147
2019Exported zero148
2020Exported zero230
2021Exported zero211
2022Reported305
2023Reported375
2024Occurrence recorded*327
2025Reported292

*Occurrence is recorded, but the export does not establish an exact complete-checklist percentage.

Source and limits

This county-wide sample pools the selected years. It does not establish how regularly the species returned each year, how likely you are to find it at this spot, or whether this flock size is unusual. Percentages can be unstable when few checklists are available. Habitat, observer effort and repeated visits affect reporting. A zero does not establish absence.

eBird and its contributors, Cornell Lab of Ornithology. Downloaded 2026-10-14. eBird source chart · Method · Data terms

Nelson's Sparrow across Nationwide · When featured

195 report groups

On 273 eBird checklists · 7-day window ending October 12, 2026

Counts reflect the available eBird notable feed, which may omit other reports.

View all 273 reporting checklists

Checklists with the same location and start time are grouped together. They may be copies from a shared outing, but this feed does not confirm that. These groups are not a count of independent sightings or distinct birds. The featured checklist is included in this total.

Checklist details
Survey type
Traveling
Time in the field
25 minutes
Distance covered
0.177 km
Birders on the outing
1 person
Species logged on this checklist
19 different species