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serikali ya mapinduzi zanzibar care tanzania and department

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4.2.6 Birds<br />

Bird survey on Pemba was conducted opportunistically in Ngezi forest <strong>and</strong> the surrounding<br />

areas with a few observations made along Vumawimbi <strong>and</strong> Chokaani beaches. The exercise<br />

was conducted in January when field conditions were generally dry with limitation of fresh<br />

water bodies, no breeding activities <strong>and</strong> absence of migratory species. About 45% of the<br />

species reported in previous surveys (Pakenham, 1979) were recorded with addition of<br />

Violet–backed Starling (Table 4). Ngezi forest being one of the least disturbed habitats on the<br />

isl<strong>and</strong> is diverse in microhabitats that are suitable for birds <strong>and</strong> other forms of life. The forest<br />

is important in hosting almost all Pemba endemic bird species (Pemba Green Pigeon, Pemba<br />

Scops-Owl, Dickson’s Kestrel, Pemba Sunbird <strong>and</strong> Pemba White-eye were found in Ngezi<br />

forest).<br />

Pemba Green Pigeon was common but difficult to detect. Flocks of up to 15<br />

individuals were found in forest near forest gate office <strong>and</strong> Machopeni area feeding<br />

quietly in high canopy. The population of Pemba Scops Owl in Ngezi forest based on<br />

calls is relatively high when compared to areas outside the forest. While camping in<br />

the forest, Scops Owl calls were heard throughout the nights from all corners <strong>and</strong> their<br />

territorial spacing is estimated to be about 300m. The high abundance of this species<br />

may be explained by food (Rattus rattus) available in the Ngezi forest as supported by<br />

our trapping success (Appendix 2). Pemba Sunbird <strong>and</strong> White Eye were common in<br />

forest <strong>and</strong> cultivation.<br />

Pemba Scops Owl (Otus pembanensis)<br />

This small owl is endemic to Pemba Isl<strong>and</strong> where it inhabits densely foliaged habitats<br />

including forests, clove plantation, mangrove <strong>and</strong> patches of forests that are used as<br />

grave<strong>ya</strong>rds. Observations made in Ngezi Forest Reserve suggest that the population of<br />

the owl is relatively high in the forest. Calls were recorded throughout the night from<br />

mid-canopy with territorial spacing of about 300m. The intensity of calling was high<br />

from sundown until midnight <strong>and</strong> less so until dawn. Assuming that there is even<br />

distribution of this species in Ngezi forest <strong>and</strong> in other areas on Pemba Isl<strong>and</strong>, the<br />

population may be considered as marginally threatened.<br />

4.2 7 Reptiles<br />

Within Ngezi forest <strong>and</strong> its surroundings (cultivations, s<strong>and</strong>y <strong>and</strong> coral rag beaches<br />

<strong>and</strong> wetl<strong>and</strong>s) suitable habitats for reptiles are well represented. Fifteen (62.5%) of the<br />

known reptile species on Pemba (Pakenham, 1983) were recorded during the study<br />

period (Appendix 2). The most abundant <strong>and</strong> widely distributed species of the reptiles<br />

in Ngezi forest was the Pemba endemic skink (Mabu<strong>ya</strong> albotaeniata). The species<br />

was very common in leaf litter on forest floor <strong>and</strong> less common in cultivation <strong>and</strong><br />

settlements where they coexist with Mabu<strong>ya</strong> striata.<br />

Marine forms were not encountered since much of the surveys were carried out in<br />

terrestrial environment. The s<strong>and</strong>y beaches around Vumawimbi are prospective areas<br />

for the breeding of Green Turtles. However, due to disturbance resulting from fishing<br />

<strong>and</strong> beach visitors the area seems unsafe for sea turtles to breed.<br />

4.2.8 Amphibians<br />

The community of amphibians on Pemba Isl<strong>and</strong> may be considered as East African<br />

coastal. The species richness on the isl<strong>and</strong> is low when compared to that of Zanzibar<br />

<strong>and</strong> other areas along the coast of East Africa. Seven species from 4 families were<br />

recorded on this study suggesting addition of two records from the previous<br />

56

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