Species · Indiana · BBS 2025 Release · 1966–2024
Double-crested Cormorant Population Trend in Indiana
Double-crested Cormorant in Indiana has fallen sharply: down 67% on the route-weighted index since 2011.
-67%Since 2011
10Routes In State
12Years
Notable Double-crested Cormorant Trends in Indiana
long arc declinecomputed index
Double-crested Cormorant has fallen sharply in Indiana: down 67% on the route-weighted index since 2011.
Double-crested Cormorant Survey Routes in Indiana
| Belmont | 3 | 2003 | 2003 |
| Middlebury | 2 | 2015 | 2015 |
| Lakeville | 2 | 2003 | 2002 |
| Monticello | 2 | 2013 | 2003 |
| Shelbyville | 2 | 2024 | 2024 |
| Indiana Dune | 1 | 2024 | 2011 |
| Packertown 2 | 1 | 2022 | 2013 |
| Decatur | 1 | 2017 | 2017 |
| Pimento | 1 | 2021 | 2021 |
| Friendswood | 1 | 2017 | 2017 |
Double-crested Cormorant Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.