Noriyuki M. Yamaguchi
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View article: Discovery of a New Breeding Site for the Endangered Japanese Murrelet <i>Synthliboramphus wumizusume</i> in Nagasaki, Japan
Discovery of a New Breeding Site for the Endangered Japanese Murrelet <i>Synthliboramphus wumizusume</i> in Nagasaki, Japan Open
We report a breeding site for the Japanese Murrelet Synthliboramphus wumizusume discovered for the first time in March 2023 on Hahakojima (Hakoshima), a small island in Nagasaki City, Nagasaki Prefecture, off Kyushu, Japan. We counted 129 …
View article: Impacts of Depredation by Large-billed Crows <i>Corvus macrorhynchos</i> on the Colony of Japanese Murrelets <i>Synthliboramphus wumizusume</i> at Eboshijima, Japan
Impacts of Depredation by Large-billed Crows <i>Corvus macrorhynchos</i> on the Colony of Japanese Murrelets <i>Synthliboramphus wumizusume</i> at Eboshijima, Japan Open
Eboshijima, Japan is a small island in the Tsushima Strait that hosts a small colony of Japanese Murrelet Synthliboramphus wumizusume, an endangered seabird that breeds in the warm Kuroshio Current region around Japan and South Korea. We c…
View article: Inter-sexual differences in contributions of helpers in a tropical population of the cooperatively breeding Grey-crowned Babbler <i>Pomatostomus temporalis</i>
Inter-sexual differences in contributions of helpers in a tropical population of the cooperatively breeding Grey-crowned Babbler <i>Pomatostomus temporalis</i> Open
The Grey-crowned Babbler Pomatostomus temporalis is a group-living, cooperatively breeding species in which offspring of both sexes are equally philopatric, but only male helpers inherit the natal territory. We quantified helping ef…
View article: The interplay of wind and uplift facilitates over-water flight in facultative soaring birds
The interplay of wind and uplift facilitates over-water flight in facultative soaring birds Open
Flying over the open sea is energetically costly for terrestrial birds. Despite this, over-water journeys of many birds, sometimes hundreds of kilometres long, are uncovered by bio-logging technology. To understand how these birds afford t…
View article: Male and Female Helpers of Grey-Crowned Babblers Pomatostomus temporalis rubecula Acquire Breeding Positions in Different Ways, and don't Avoid Incest
Male and Female Helpers of Grey-Crowned Babblers Pomatostomus temporalis rubecula Acquire Breeding Positions in Different Ways, and don't Avoid Incest Open
We studied the pattern of acquisition of breeding positions among helpers in a population of Grey-crowned Babblers Pomatostomus temporalis rubecula in the monsoon tropics of northwestern Australia, using both behavioural and molecular data…
View article: The interplay of wind and uplift facilitates over-water flight in facultative soaring birds
The interplay of wind and uplift facilitates over-water flight in facultative soaring birds Open
Flying over the open sea is energetically costly for terrestrial birds. Despite this, over-water journeys of many birds, sometimes hundreds of kilometers long, are uncovered by bio-logging technology. To understand how these birds afford t…
View article: Nest Boxes for White-Throated Needletailed Swift Hirundapus caudacutus to Promote Conservation and Support Ecological Research
Nest Boxes for White-Throated Needletailed Swift Hirundapus caudacutus to Promote Conservation and Support Ecological Research Open
The provision of nest boxes to supplement naturally available nest sites can be an effective means of conserving cavity nesters. The White-throated Needletailed Swift Hirundapus caudacutus is a large, cavity-nesting swift. With reference t…
View article: Sea-Crossing Along Migratory Flyways is More Strongly Limited by Wind than by Lack of Uplift
Sea-Crossing Along Migratory Flyways is More Strongly Limited by Wind than by Lack of Uplift Open
View article: Raptor migration in an oceanic flyway: wind and geography shape the migratory route of grey-faced buzzards in East Asia
Raptor migration in an oceanic flyway: wind and geography shape the migratory route of grey-faced buzzards in East Asia Open
Flapping flight is relatively costly for soaring birds such as raptors. To avoid costly flight, migrating raptors generally avoid flying over water. As a result, all but one of the global raptor migration flyways are largely over land. The…
View article: Supplementary material from "Raptor migration in an oceanic flyway: wind and geography shape the migratory route of grey-faced buzzards in East Asia"
Supplementary material from "Raptor migration in an oceanic flyway: wind and geography shape the migratory route of grey-faced buzzards in East Asia" Open
Flapping flight is relatively costly for soaring birds such as raptors. To avoid costly flight, migrating raptors generally avoid flying over water. As a result, all but one of the global raptor migration flyways are largely over land. The…
View article: Input data for step selection function from Raptor migration in an oceanic flyway: wind and geography shape the migratory route of grey-faced buzzards in East Asia
Input data for step selection function from Raptor migration in an oceanic flyway: wind and geography shape the migratory route of grey-faced buzzards in East Asia Open
Each row of the table represent one point used in the analysis. X and y indicate geographic longitude and latitude, respectively. Used shows whether the point was an actual observation using satellite-tracking (used=1) or was randomly sele…
View article: Input data for step selection function from Raptor migration in an oceanic flyway: wind and geography shape the migratory route of grey-faced buzzards in East Asia.
Input data for step selection function from Raptor migration in an oceanic flyway: wind and geography shape the migratory route of grey-faced buzzards in East Asia. Open
Each row of the table represent one point used in the analysis. X and y indicate geographic longitude and latitude, respectively. Used shows whether the point was an actual observation using satellite-tracking (used=1) or was randomly sele…
View article: Climate change alters the optimal wind-dependent flight routes of an avian migrant
Climate change alters the optimal wind-dependent flight routes of an avian migrant Open
Migratory birds can be adversely affected by climate change as they encounter its geographically uneven impacts in various stages of their life cycle. While a wealth of research is devoted to the impacts of climate change on distribution r…
View article: The Effects of Atmospheric Currents on the Migratory Behavior of Soaring Birds: A Review
The Effects of Atmospheric Currents on the Migratory Behavior of Soaring Birds: A Review Open
Atmospheric currents influence the choice of migratory routes and flight characteristics of birds as well as their decisions regarding migration onset and stopovers. Among long distance avian migrants, soaring birds are particularly depend…
View article: The Effects of Weather Conditions on Avian Movements
The Effects of Weather Conditions on Avian Movements Open
View article: Migration Routes of Satellite-Tracked Rough-Legged Buzzards from Japan: The Relationship between Movement Patterns and Snow Cover
Migration Routes of Satellite-Tracked Rough-Legged Buzzards from Japan: The Relationship between Movement Patterns and Snow Cover Open
The Rough-legged Buzzard Buteo lagopus is a Holarctic species that breeds in the Arctic and subarctic regions and winters in a broad range from 40° to 55°N. In Japan, this species is typically a rare winter visitor, but in January 2008 the…
View article: Atmospheric Data for Ornithology: An Introduction
Atmospheric Data for Ornithology: An Introduction Open
This paper introduces user-friendly atmospheric data, so-called objective analysis data, for ornithological studies. The data have been interpolated onto grid points distributed at a regular interval in space and time, and are suitable for…
View article: Supplementary material from "Climate change alters the optimal wind-dependent flight routes of an avian migrant"
Supplementary material from "Climate change alters the optimal wind-dependent flight routes of an avian migrant" Open
Migratory birds can be adversely affected by climate change as they encounter its geographically uneven impacts in various stages of their life cycle. While a wealth of research is devoted to the impacts of climate change on distribution r…
View article: Seasonal Movements of Japanese Murrelets Revealed by Geolocators
Seasonal Movements of Japanese Murrelets Revealed by Geolocators Open
The Japanese Murrelet Synthliboramphus wumizusume is listed as a vulnerable species by IUCN, but little information is available on its movements during the non-breeding season. We tracked three murrelets during the non-breeding season usi…
View article: Evidence that dorsally mounted satellite transmitters affect migration chronology of Northern Pintails
Evidence that dorsally mounted satellite transmitters affect migration chronology of Northern Pintails Open
We compared migration movements and chronology between Northern Pintails (Anas acuta) marked with dorsally mounted satellite transmitters and pintails marked only with tarsus rings. During weekly intervals of spring and autumn migration be…
View article: A Breeding Record of the Ryukyu Scops Owl on Okinoshima, in Northernmost Fukuoka, Japan
A Breeding Record of the Ryukyu Scops Owl on Okinoshima, in Northernmost Fukuoka, Japan Open
A nest of the Ryukyu Scops Owl Otus elegans was found on Okinoshima (Okino Island), Fukuoka Prefecture, Japan (34.24°N, 130.10°E), in the Tsushima Strait, on 28 July 2013. The breeding pair and their three owlets were caught and their iden…