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The site was identified as important in 2007 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
Maccoa Duck Oxyura maccoa	EN	resident	2007-2010	< 50 individuals	A1
Grey Crowned Crane Balearica regulorum	EN	resident	2007	< 50 individuals	A1
Hunter's Cisticola Cisticola hunteri	LC	resident	2007	present	A2, A3
Jackson's Widowbird Euplectes jacksoni	NT	resident	2007	< 50 individuals	A2, A3
Sharpe's Longclaw Macronyx sharpei	EN	resident	2007	< 50 individuals	A1, A2, A3

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2007) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2007. The most recent assessment (2023) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Wetlands (inland)	moderate (70-90%)	moderate (70-90%)	unfavourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happening now	majority/most of area/population (50-90%)	very rapid to severe deterioration	very high
Biological resource use	happening now	majority/most of area/population (50-90%)	very rapid to severe deterioration	very high
Climate change and severe weather	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Residential and commercial development	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Energy production and mining	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Invasive and other problematic species and genes	likely in short term (within 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
Pollution	likely in short term (within 4 years)	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
Some of site covered (10-49%)	A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	medium

The Local Conservation Group(s) listed below are working to conserve this IBA.

Name	Year formed
Nyahururu Bird Club	2008

For more information on BirdLife's work with Local Conservation Groups, please click here.

Habitat1	Habitat detail	% of IBA
Wetlands (inland)	Freshwater lakes and pools	72
Grassland	Grassland - montane	28

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	70
nature conservation and research	15
other	5
forestry	1

Unprotected.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Ol' Bolossat (Kenya). Downloaded from https://datazone.birdlife.org/site/factsheet/lake-ol-bolossat-iba-kenya on 23/11/2024.