email a friend
printable version
EN
Madagascar Pond-heron Ardeola idae

IUCN Red List Criteria

Critically Endangered  
Endangered C2a(ii) 
Vulnerable A2bcd+3bcd+4bcd;C2a(ii) 

IUCN Red List history

Year Category
2012 Endangered
2008 Endangered
2006 Endangered
2004 Endangered
2000 Vulnerable
1994 Lower Risk/Near Threatened
1988 Near Threatened

Species attributes

Migratory status full migrant Forest dependency Low
Land mass type shelf island
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 553,000 medium
Extent of Occurrence non-breeding (km2) 3,320,000 medium
Number of locations 11-100 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1300-4000 medium Estimated 2002
Population trend Decreasing medium -
Number of subpopulations 1 - - -
Largest subpopulation 2000-6000 - - -
Generation length (yrs) 5 - - -
Population justification: The population is estimated to number 2,000-6,000 individuals, roughly equivalent to 1,300-4,000 mature individuals (T. Dodman in litt. 2002).
Trend justification: Whilst the species remains fairly widespread, populations are low, and increasing exploitation at breeding sites is likely to increase the rate of population decline (ZICOMA 1999). As a result, a rapid and on-going population decline is suspected. One site was reported to have 232 breeding individuals in 2007 but zero in 2008 (J. Ramanampamonjy in Anon. 2008). The recently discovered breeding population on Mayotte is thought to be increasing (Rocamora 2004; in Ndang'ang'a and Sande 2008). In 1990 the species was considered to have undergone a significant recent decline (Burger et al. 1990).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Angola Vagrant Extant   Yes    
Burundi Native Extant   Yes    
Comoros Native Extant Yes Yes    
Congo, The Democratic Republic of the Native Extant   Yes    
Kenya Native Extant   Yes    
Madagascar Native Extant Yes      
Malawi Native Extant   Yes    
Mayotte (to France) Native Extant     Yes  
Mozambique Native Extant   Yes    
Réunion (to France) Native Extant Yes      
Rwanda Native Extant   Yes    
Seychelles Native Extant Yes      
Somalia Vagrant Extant   Yes    
Tanzania Native Extant   Yes    
Uganda Native Extant   Yes    
Yemen Vagrant Extant   Yes    
Zambia Native Extant   Yes    
Zimbabwe Native Extant   Yes    

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
French Southern Territories Europa site factsheet
Kenya Lake Nakuru National Park site factsheet
Kenya Masai Mara site factsheet
Kenya Mwea National Reserve site factsheet
Kenya Nairobi National Park site factsheet
Madagascar Ambatovaky Special Reserve site factsheet
Madagascar Analamera Special Reserve site factsheet
Madagascar Andohahela National Park: Parcel II site factsheet
Madagascar Ankarafantsika National Park and Ampijoroa Forestry Station site factsheet
Madagascar Ankarana Special Reserve site factsheet
Madagascar Baly Bay National Park site factsheet
Madagascar Bezavona Classified Forest site factsheet
Madagascar Isalo (Isalo National Park IBA) site factsheet
Madagascar Lake Alaotra site factsheet
Madagascar Lake Ihotry Hunting Reserve - Mangoky Delta complex site factsheet
Madagascar Lake Itasy site factsheet
Madagascar Mahavavy Kinkony Wetland site factsheet
Madagascar Makira SAPM site factsheet
Madagascar Manambolomaty wetland complex and Tsimembo Classified Forest site factsheet
Madagascar Mananara-North National Park site factsheet
Madagascar Mantadia National Park and Analamazaotra Special Reserve site factsheet
Madagascar Marotandrano Special Reserve site factsheet
Madagascar Masoala National Park site factsheet
Madagascar Menabe forest complex site factsheet
Madagascar Montagne d'Ambre National Park and Special Reserve site factsheet
Madagascar Namoroka National Park site factsheet
Madagascar Sahamalaza-Iles Radama (Sahamalaza Bay wetlands IBA) site factsheet
Madagascar Tsingy de Bemaraha National Park (Bemaraha Tsingy National Park and Strict Nature Reserve IBA) site factsheet
Madagascar Wetlands of the Tsiribihina delta and upper Tsiribihina river site factsheet
Madagascar Zombitse-Vohibasia National Park site factsheet
Mayotte (to France) Baie de Bouéni site factsheet
Mozambique Moebase region site factsheet
Rwanda Akagera National Park site factsheet
Seychelles Aldabra atoll site factsheet
Tanzania Kilombero Valley site factsheet
Tanzania Selous Game Reserve site factsheet
Uganda Queen Elizabeth National Park and Lake George site factsheet
Zambia Sumbu National Park and Tondwa Game Management Area site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable non-breeding
Forest Subtropical/Tropical Mangrove Vegetation Above High Tide Level suitable non-breeding
Marine Neritic Estuaries suitable non-breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) major breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) major non-breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) major breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) major non-breeding
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) major breeding
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) major non-breeding
Altitude 0 - 1800 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Hunting & trapping terrestrial animals / Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Largemouth Bass (Micropterus salmoides) Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Competition
Natural system modifications Dams & water management/use / Abstraction of surface water (agricultural use) Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation

Utilisation

Purpose Primary form used Life stage used Source Scale Level Timing
Food (human) Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent

Recommended citation
BirdLife International (2014) Species factsheet: Ardeola idae. Downloaded from http://www.birdlife.org on 28/11/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 28/11/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Endangered
Family Ardeidae (Herons)
Species name author (Hartlaub, 1860)
Population size 1300-4000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 553,000 km2
Country endemic? No
Links to further information
- Summary information on this species
- Projected distributions under climate change