Species · BCR 2 · BBS 2025 Release · 1966–2024

Long-tailed Jaeger In BCR 2

Long-tailed Jaeger in BCR 2 has surged: up 202% on the route-weighted index since 1989.

+202%Since 1989
14Routes In Region
34Years

Notable Signals

long arc increasecomputed index

Long-tailed Jaeger has surged in BCR 2: up 202% on the route-weighted index since 1989.

Forecast

If the recent trend holds, Long-tailed Jaeger in BCR 2 is projected to rise about 72% by 2029 — from 1.9 in 2024 to a central estimate of 3.3 (95% range 0.00–7.1). A 5-year backtest shows a typical error of ±63.1%, with 100% of held-out values landing inside the 95% band.

+72%Change by 2029
3.3Projected 2029 index
0.007.195% range
±63.1%Backtest error
19862029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20253.30.007.1
20263.30.007.1
20273.30.007.1
20283.30.007.1
20293.30.007.1

Routes In BCR 2

Routes recording Long-tailed Jaeger in BCR 2.
NomeALASKA322023
Cape NomeALASKA92024
St. Mary'SALASKA62014
Kugarak (Short)ALASKA61987
TellerALASKA52024
Selawik (Short)ALASKA51987
CouncilALASKA42023
Gweek RiverALASKA31997
KotzebueALASKA32024
Kotzebue (Short)ALASKA31994
Goodnews BayALASKA22003
King SalmonALASKA12023
Salmon LakeALASKA12019
Cold Bay (Short)ALASKA11989

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