BirdAnalyst
Species · BCR 30 · BBS 2025 Release · 1966–2024

Caspian Tern In New England / Mid-Atlantic Coast

All regionsNew England / Mid-Atlantic CoastWetland birds

Caspian Tern in New England / Mid-Atlantic Coast has held roughly steady: up 6% on the route-weighted index since 1970.

+6%Since 1970TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
8Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
14YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Caspian Tern in New England / Mid-Atlantic Coast. See the full index history below.

Routes In New England / Mid-Atlantic Coast

Routes recording Caspian Tern in New England / Mid-Atlantic Coast.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
BlackbirdDELAWARE32023
Bethany BchDELAWARE21969
Lowes XrdsDELAWARE11970
JonesMARYLAND11981
MelitotaMARYLAND12016
HongaMARYLAND12005
MadisonMARYLAND12005
Cape CharlesVIRGINIA12006

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.