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The site was identified as important in 1999 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
Madagascar Grebe Tachybaptus pelzelnii	EN	resident	1993-1997	present	A1
Giant Coua Coua gigas	LC	resident	1993-1997	present	A3
Coquerel's Coua Coua coquereli	LC	resident	1993-1997	present	A2, A3
Olive-capped Coua Coua olivaceiceps	LC	resident	1993-1997	present	A3
Madagascar Crested Ibis Lophotibis cristata	VU	resident	1993-1997	present	A1
Malagasy Pond Heron Ardeola idae	EN	breeding	1993-1997	present	A1
Malagasy Harrier Circus macrosceles	EN	resident	1993-1997	present	A1
Madagascar Sparrowhawk Accipiter madagascariensis	NT	resident	1993-1997	present	A1
Henst's Goshawk Accipiter henstii	VU	resident	1993-1997	present	A1
Sickle-billed Vanga Falculea palliata	LC	resident	1993-1997	present	A3
Subdesert Brush-warbler Nesillas lantzii	LC	resident	1993-1997	present	A3
Thamnornis Thamnornis chloropetoides	LC	resident	1993-1997	present	A2, A3
Appert's Tetraka Xanthomixis apperti	VU	resident	1993-1997	present	A1, A2, A3
Forest Rock-thrush Monticola sharpei	LC	non-breeding	1993-1997	present	A1, A2
Sakalava Weaver Ploceus sakalava	LC	resident	1993-1997	present	A3

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (1999) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 1999. The most recent assessment (2017) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Forest	-	good (> 90%)	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Biological resource use	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Energy production and mining	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Natural system modifications	happening now	some of area/population (10-49%)	slow but significant deterioration	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Unknown	A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	Unknown	low

Year	Protected Area	Designation	% overlap with IBA
1997	Vohibasia	National Park	35
1997	Zombitse-Vohibasia	National Park	65

Habitat1	Habitat detail	% of IBA
Forest		80
Savanna		17
Grassland		-
Shrubland		-

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	-
hunting	-
nature conservation and research	-
tourism/recreation	-
other	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Zombitse-Vohibasia National Park and extension (Madagascar). Downloaded from https://datazone.birdlife.org/site/factsheet/zombitse-vohibasia-national-park-and-extension-iba-madagascar on 22/11/2024.