All roundupsNationwide · week ending October 5, 2026
The week in rare birds
Storm-petrels and gulls dominated coastal reports this week, with significant inland movements of western finches and sparrows across multiple states. Eastern warblers and terns continue their fall migration patterns.
Maine hosted 77 Wilson's Storm-Petrels on October 4, marking the highest count across three states with 204 total reports. This substantial pelagic aggregation reflects intense offshore activity.
Wisconsin recorded up to six Sabine's Gulls on October 4, part of a 13-state pattern with 78 reports. This gull remains widely scattered across the continent during migration.
California's Los Rasalies Ravine hosted 240 Cassin's Finches on October 4, the highest count from six states with 88 reports. Western finch irruptions continue intensifying across the region.
Marjorie Perry Nature Preserve in Colorado recorded Couch's Kingbird on October 4, contributing to 105 reports from only two states. This southwestern vagrant remains a notable eastern Colorado rarity.
Marjorie Perry Nature Preserve · October 4, 2026 · 1 bird
Iowa's Lewis Bottoms marsh held 35 White-faced Ibises on October 4, among 63 reports across 12 states. Fall dispersal continues bringing this western species across the plains region.
Lewis Bottoms marsh (private property--view from road or public property) · October 4, 2026 · 1 bird
Pennsylvania's Leaser Lake recorded 34 Common Terns on October 5, reflecting continued coastal and inland movement across 17 states. This widespread pattern shows typical fall waterbird staging.
