Species · Maryland · BBS 2025 Release · 1966–2024
Henslow's Sparrow Population Trend in Maryland
Henslow's Sparrow in Maryland has fallen sharply: down 66% on the route-weighted index since 1969.
-66%Since 1969
12Routes In State
14Years
Notable Henslow's Sparrow Trends in Maryland
long arc declinecomputed index
Henslow's Sparrow has fallen sharply in Maryland: down 65% on the route-weighted index since 1969.
Henslow's Sparrow Survey Routes in Maryland
| Madison | 2 | 1969 | 1968 |
| Newark | 2 | 1970 | 1969 |
| Theodore | 1 | 1968 | 1968 |
| Piney Neck | 1 | 1971 | 1971 |
| Accident | 1 | 1994 | 1994 |
| Emmitsburg | 1 | 1969 | 1969 |
| Olney | 1 | 1972 | 1972 |
| Warfieldsbrg | 1 | 1969 | 1969 |
| Cokesbury | 1 | 1967 | 1967 |
| Fowblesburg | 1 | 1969 | 1969 |
| Finzel | 1 | 2021 | 1999 |
| Cheltenham | 1 | 1998 | 1998 |
Henslow's Sparrow Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.