Lower Colorado River Valley


IBA Justification

The site was identified as important in 2010 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 List1 Season Year(s) Size IBA criteria
Black Rail Laterallus jamaicensis EN resident - present A1

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2010) may differ.


IBA Protection

Year Protected Area Designation % overlap with IBA
- Cibola National Wildlife Refuge 8
- Palo Verde Ecological Reserve 2
1939 Cibola National Wildlife Refuge 7
1939 Cibola National Wildlife Refuge <1
1990 Havasu National Wildlife Refuge 24


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lower Colorado River Valley (USA). Downloaded from https://datazone.birdlife.org/site/factsheet/lower-colorado-river-valley-iba-usa on 23/11/2024.