BirdAnalyst
Guild · Alaska · BBS 2025 Release · 1966–2024

Aerial Insectivores In Alaska

All statesAlaska

12 species in this guild. As a group they are -65% since 1972.

Guild Signals

guild collapsecomputed index

Aerial insectivores as a group have fallen sharply in Alaska, down 65% since 1972.

Forecast

If the recent trend holds, Aerial insectivores in Alaska is projected to fall about 91% by 2029 — from 2.7 in 2024 to a central estimate of 0.24 (95% range 0.00–7.3). A 5-year backtest shows a typical error of ±84%, with 100% of held-out values landing inside the 95% band.

-91%Change by 2029
0.24Projected 2029 index
0.00–7.395% range
±84%Backtest error
19682029
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
20250.760.007.8
20260.630.007.7
20270.500.007.6
20280.370.007.4
20290.240.007.3

Member Species In Alaska

Aerial insectivores species in Alaska.
Barn SwallowHirundinidae-99%
Say's PhoebeTyrannidae-99%
Cliff SwallowHirundinidae-84%
Bank SwallowHirundinidae-82%
Alder FlycatcherTyrannidae-27%
Least FlycatcherTyrannidae-23%
Western Wood-PeweeTyrannidae-9%
Violet-green SwallowHirundinidae+51%
Tree SwallowHirundinidae+90%
Olive-sided FlycatcherTyrannidae+107%
Hammond's FlycatcherTyrannidae+134%
Yellow-bellied FlycatcherTyrannidae15×

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