Grasslands Ecological Area


IBA Justification

The site was identified as internationally important for bird conservation in 2009 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:
Species Red List Season (year/s of estimate) Size IBA criteria
Tricolored Blackbird Agelaius tricolor EN resident (-) present A1

IBA Protection

Year Protected Area Designation (management category) % coverage of IBA
- North Grasslands Wildlife Area (V) 5
- Los Banos Wildlife Area (V) 4
- Volta Wildlife Area (V) 2
- United States Fish And Wildlife Service Easement (V) 1
1951 Merced National Wildlife Refuge (IV) 2
1966 San Luis National Wildlife Refuge (IV) 12
1992 Great Valley Grasslands State Park (III) 2
1996 WRP_Merced, CA (06047) Conservation Easement (V) 1
1998 WRP_Merced, CA (06047) Conservation Easement (V) <1
2000 WRP_Merced, CA (06047) Conservation Easement (V) 1
2001 EWPP-FPE_Merced, CA (06047) Conservation Easement (V) <1
2011 WRP_Merced , CA (06047) Conservation Easement (V) <1


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Grasslands Ecological Area (USA). Downloaded from https://datazone.birdlife.org/site/factsheet/grasslands-ecological-area-iba-usa on 26/12/2024.