BirdAnalyst
Species · BCR 15 · BBS 2025 Release · 1966–2024

Common Nighthawk In Sierra Nevada

All regionsSierra NevadaAerial insectivores

Common Nighthawk in Sierra Nevada has surged: up 142% on the route-weighted index since 1972.

+142%Since 1972
23Routes In Region
54Years

Notable Signals

long arc increasecomputed index

Common Nighthawk has surged in Sierra Nevada: up 142% on the route-weighted index since 1972.

Forecast

If the recent trend holds, Common Nighthawk in Sierra Nevada is projected to fall about 23% by 2029 — from 1.6 in 2024 to a central estimate of 1.2 (95% range 0.11–2.3). A 5-year backtest shows a typical error of ±73.3%, with 100% of held-out values landing inside the 95% band.

-23%Change by 2029
1.2Projected 2029 index
0.11–2.395% range
±73.3%Backtest error
19702029
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
20251.20.102.3
20261.20.102.3
20271.20.112.3
20281.20.112.3
20291.20.112.3

Routes In Sierra Nevada

Routes recording Common Nighthawk in Sierra Nevada.
Eagle LakeCALIFORNIA202024
GoumazCALIFORNIA192010
Hat CreekCALIFORNIA82018
Little TruckeeCALIFORNIA62023
Pine MountainCALIFORNIA62017
ChilcootCALIFORNIA62024
Lassen ParkCALIFORNIA41988
DownievilleCALIFORNIA32013
Chaos CraterCALIFORNIA32018
LumberyardCALIFORNIA22014
Tuolumne GroveCALIFORNIA22024
RivertonCALIFORNIA22007
ChesterCALIFORNIA22017
Meadow ValleyCALIFORNIA22023
Last ChanceCALIFORNIA22019
WestvilleCALIFORNIA12011
DardanelleCALIFORNIA12010
JohnsvilleCALIFORNIA11989
WoodfordsCALIFORNIA12024
Greenhorn MtCALIFORNIA11973
SattleyCALIFORNIA12019
Butte MeadowCALIFORNIA11992
GeneseeCALIFORNIA12024

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