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Showing 2 results for Conservation Threats
Foraging and nesting behavior of Pallas’s fish eagle, Haliaeetus leucoryphus (Pallas, 1771) in the Himalayan Bhutan
Sherab Jamtsho, Sonam Phuntsho, Tshering Dorji, Lhendup Tharchen,
Volume 5, Issue 2 (6-2023)
Abstract
Pallas’s fish eagle, Haliaeetus leucoryphus (Pallas), is listed as endangered (En) in the IUCN Red List of Threatened Species with a global population of 2,500 to 9,999 individuals. It is one of the least known species in Bhutan and assessing its foraging and nesting behavior will be one of the best conservation measures to monitor its status, ecology and conservation threats. Therefore, the nesting behavior of the eagle was observed for two months and chick feeding activities for sixteen weeks at 21 vantage points along a 75 km highway in the Punatshangchu River Valley, Bhutan. Fifty households residing 500 m from the river were interviewed using structured questionnaires to examine their perception towards the eagle. A total of 92% (n= 46) of respondents were aware of the presence of H. leucoryphus in their locality and 78% felt that it is a rare and endangered fishing eagle. However, 84% (n= 42) of respondents were not aware of nesting within their vicinity. The sexes of H. leucoryphus can be differentiated by their plumage and the fledgling was observed approximately one week after the end of the incubation period. It took 112 days for the fledging to leave the nest. The study revealed that the eagle preferred foraging between 7  and 9 AM in the morning and in the afternoon from 1 to 3 PM. The maximum foraging attempts occurred in a pool habitat 54% (n= 37) with a success rate of 78% (n= 54). The hunting and feeding of the fledgling was done by the male and prey delivery in the first two months consisted of 78.5% fish and 19.5% rodents. However, the feeding of fish declined by 35% in the next two months and its diet mainly consisted of small birds. Attacks on the fledgling were done by the crested serpent eagle (Spilornis cheela Latham) (48%), followed by the black eagle Ictinaetus malaiensis (Temminck) (33%).

A new species of Ramphotyphlops Fitzinger, 1843 (Squamata: Typhlopidae) in the R. flaviventer Group from Woodlark Island, Papua New Guinea
Fred Kraus,
Volume 5, Issue 2 (6-2023)
Abstract
I describe a new species of blindsnake of the genus Ramphotyphlops Fitzinger, 1843, from Woodlark Island, off the southeastern tip of New Guinea. The new species is a member of the R. flaviventer (Peters, 1864) group and is characterized by a unique combination of number of longitudinal scale rows, details of the shape of the rostral scale, color pattern, and shape of the tail spine.  The nearest related species (R. depressus Peters, 1880) in this group occurs 380 km to the northeast from the new species, and the remaining species of the group lie no closer than 2570 km distant. The new species seems most similar morphologically to relatives from far western New Guinea, but this could be due to homoplasy or plesiomorphy. The species seems common in the widespread mature secondary forest that occurs across the island, but non-traditional land tenure and repeated outside proposals to deforest much of the island pose a continuing series of threats to this and other endemic species on Woodlark.

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