• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

The site was identified as important in 2019 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
Lesser Flamingo Phoeniconaias minor	NT	non-breeding	2014-2017	27-45 individuals	B1a
Black Heron Egretta ardesiaca	LC	non-breeding	1988	1,354 individuals	A4i
Western Reef-egret Egretta gularis	LC	non-breeding	1988	2,244 individuals	A4i
Grey Plover Pluvialis squatarola	VU	winter	-	3,200 individuals	A4i
Common Ringed Plover Charadrius hiaticula	LC	winter	2014-2019	853-3,156 individuals	B3a
Kentish Plover Charadrius alexandrinus	LC	winter	-	1,500 individuals	A4i
Bar-tailed Godwit Limosa lapponica	NT	winter	2014-2017	303-633 individuals	B1a
Ruddy Turnstone Arenaria interpres	NT	winter	-	700 individuals	A4i
Red Knot Calidris canutus	NT	winter	2014-2017	73-143 individuals	B1a
Curlew Sandpiper Calidris ferruginea	VU	winter	2014-2017	802-1,966 individuals	B1a
Collared Pratincole Glareola pratincola	LC	non-breeding	1983	2,500 individuals	A4i
Slender-billed Gull Larus genei	LC	winter	2014-2017	219-287 individuals	B3a
Common Gull-billed Tern Gelochelidon nilotica	LC	winter	2014-2017	377 individuals	B3a
Caspian Tern Hydroprogne caspia	LC	non-breeding	2014-2017	1,586-3,975 individuals	A4, B3a
Red-throated Bee-eater Merops bulocki	LC	resident	1997	present	A3
Blue-bellied Roller Coracias cyanogaster	LC	resident	1997	present	A3
Senegal Parrot Poicephalus senegalus	LC	resident	1997	present	A3
Yellow-billed Shrike Lanius corvinus	LC	resident	1997	present	A3
Piapiac Ptilostomus afer	LC	resident	1997	present	A3
Purple Starling Lamprotornis purpureus	LC	resident	1997	present	A3
Bronze-tailed Starling Lamprotornis chalcurus	LC	resident	1997	present	A3
White-fronted Black-chat Oenanthe albifrons	LC	resident	1997	present	A3
Lavender Waxbill Glaucestrilda coerulescens	LC	resident	1997	present	A3
Grey-headed Oliveback Delacourella capistrata	LC	resident	1997	present	A3

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2019) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2019. The most recent assessment (2024) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Forest	moderate (70-90%)	poor (40-69%)	very unfavourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Pollution	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Biological resource use	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Climate change and severe weather	happening now	some of area/population (10-49%)	no or imperceptible deterioration	low
Energy production and mining	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Little/none of site covered (<10%)	No management plan exists but the management planning process has begun	Some limited conservation initiatives are in place	low

Year	Protected Area	Designation	% overlap with IBA
1980	Rio Geba/Rio Mansoa	Hunting Reserve	-

Habitat1	Habitat detail	% of IBA
Forest		75
Artificial/Terrestrial		16
Savanna		5
Shrubland		1

1. IUCN Habitat classification.

Land use	% of IBA
nature conservation and research	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Rio Mansôa and Gêba estuary (Guinea-Bissau). Downloaded from https://datazone.birdlife.org/site/factsheet/rio-mansôa-and-gêba-estuary-iba-guinea-bissau on 22/11/2024.