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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
Fischer's Turaco Tauraco fischeri	NT	resident	1999	present	A1, A2, A3
Eastern Green Tinkerbird Pogoniulus simplex	LC	resident	1999	present	A3
Mombasa Woodpecker Campethera mombassica	LC	resident	1999	present	A3
Brown-headed Parrot Poicephalus cryptoxanthus	LC	resident	1999	present	A3
Green-headed Oriole Oriolus chlorocephalus	LC	resident	1999	present	A3
Chestnut-fronted Helmetshrike Prionops scopifrons	LC	resident	1999	present	A3
Fischer's Greenbul Phyllastrephus fischeri	LC	resident	1999	present	A3
Lowland Tiny Greenbul Phyllastrephus debilis	LC	resident	1999	present	A3
Little Yellow Flycatcher Erythrocercus holochlorus	LC	resident	1999	present	A3
Black-bellied Starling Notopholia corusca	LC	resident	1999	present	A3
Plain-backed Sunbird Anthreptes reichenowi	NT	resident	1999	present	A1, A3
Sokoke Pipit Anthus sokokensis	EN	resident	1999	present	A1, A2, 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 (2023) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Shrubland	moderate (70-90%)	moderate (70-90%)	unfavourable
Forest	good (> 90%)	good (> 90%)	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Climate change and severe weather	happening now	whole area/population (>90%)	slow but significant deterioration	high
Agricultural expansion and intensification	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low
Residential and commercial development	happening now	majority/most of area/population (50-90%)	no or imperceptible deterioration	low
Biological resource use	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low
Human intrusions and disturbance	happening now	whole area/population (>90%)	no or imperceptible deterioration	low
Natural system modifications	happening now	some of area/population (10-49%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A management plan exists but it is out of date or not comprehensive	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	medium

Year	Protected Area	Designation	% overlap with IBA
1967	Marenji	Forest Reserve	100

Habitat1	Habitat detail	% of IBA
Forest	Lowland forest - undifferentiated	-
Shrubland	Scrub - woodland	-

1. IUCN Habitat classification.

Land use	% of IBA
forestry	-
nature conservation and research	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Marenji Forest (Kenya). Downloaded from https://datazone.birdlife.org/site/factsheet/marenji-forest-iba-kenya on 23/11/2024.