Data Zone
The site was identified as important in 2001 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species'):| Species | Current IUCN Red List Category | Season | Year(s) | Population estimate at site | IBA criteria met |
|---|---|---|---|---|---|
| Philippine Duck Anas luzonica | VU | resident | 1900-1919 | present | A1 |
| Rufous Night-heron Nycticorax caledonicus | LC | non-breeding | 1999 | common | A4i |
| Cattle Egret Bubulcus ibis | LC | non-breeding | 1999 | common | A4i |
| Grey Heron Ardea cinerea | LC | non-breeding | 1999 | common | A4i |
| Purple Heron Ardea purpurea | LC | non-breeding | 1999 | common | A4i |
| Great White Egret Ardea alba | LC | non-breeding | 1999 | common | A4i |
| Chinese Egret Egretta eulophotes | VU | non-breeding | 1900-1949 | present | A1 |
| Little Egret Egretta garzetta | LC | non-breeding | 1999 | common | A4i |
| Pacific Golden Plover Pluvialis fulva | LC | winter | 1987-1991 | 2,100 individuals | A4i |
| Little Ringed Plover Charadrius dubius | LC | winter | 1980 | 2,000 individuals | A4i |
| Lesser Sandplover Charadrius mongolus | LC | winter | 1980 | 5,000 individuals | A4i |
| Kentish Plover Charadrius alexandrinus | LC | winter | 1980 | 15,000 individuals | A4i |
| Marsh Sandpiper Tringa stagnatilis | LC | winter | 1987-1991 | 1,500 individuals | A4i |
| Spotted Greenshank Tringa guttifer | EN | winter | 1927 | present | A1 |
| White-winged Tern Chlidonias leucopterus | LC | winter | 1999 | 1,000 individuals | A4i |
| Common Tern Sterna hirundo | LC | winter | 1999 | common | A4i |
| Common Gull-billed Tern Gelochelidon nilotica | LC | winter | 1999 | 2,000 individuals | A4i |
| Chinese Crested Tern Thalasseus bernsteini | CR | non-breeding | 1905 | present | A1 |
| A4iii Species group - waterbirds | n/a | winter | 1979-1982 | 32,000 individuals | A4iii |
The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2001).
| Habitat (IUCN level 1) | Habitat detail | Extent (% of site) |
|---|---|---|
| Marine Coastal/Supratidal | - | |
| Artificial/Aquatic & Marine | Other artificial wetlands, Saltpans | - |
| Artificial/Terrestrial | - | |
| Marine Intertidal | - | |
| Marine Neritic | - |
Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Manila Bay. Downloaded from
http://datazone.birdlife.org/site/factsheet/manila-bay-iba-philippines on 24/09/2023.
