Species · Missouri · BBS 2025 Release · 1966–2024

Black-crowned Night Heron Population Trend in Missouri

Black-crowned Night Heron in Missouri has fallen sharply: down 74% on the route-weighted index since 1970.

-74%Since 1970
7Routes In State
12Years

Notable Black-crowned Night Heron Trends in Missouri

long arc declinecomputed index

Black-crowned Night Heron has fallen sharply in Missouri: down 74% on the route-weighted index since 1970.

Black-crowned Night Heron Survey Routes in Missouri

Routes recording Black-crowned Night Heron in Missouri.
Blodgett320152015
Deventer219931969
Washington219681968
Pulaski120192019
New Point120052005
Watson120192019
Rockingham119971975

Black-crowned Night Heron Population Trend in Other States

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