Isla Alcatraz

IBA Criteria

Year of most recent IBA criteria assessment: 2015

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Reddish Egret Egretta rufescens NT breeding 2001-2010 195 individuals A1, A4i
Brown Pelican Pelecanus occidentalis LC resident 2001-2010 5,000 individuals A4i
Yellow-footed Gull Larus livens LC breeding 2001-2010 1,050 individuals A4i
Elegant Tern Thalasseus elegans NT breeding 2001-2008 250 individuals A1

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Área de Protección de Flora y Fauna Islas del Golfo de California Flora and Fauna Protection Area 0 protected area contains site 59


IUCN Habitat Habitat detail Extent (% of site)
Shrubland -
Marine Intertidal -
Other -
Marine Neritic -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
fisheries/aquaculture -
For further information about the land use classification please click here.

Land ownership
Zona Federal Marítimo Terrestre 

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Isla Alcatraz . Downloaded from on 18/10/2021.