• Korean Journal of Environment and Ecology
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• v.15 no.2
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• pp.99-102
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• 2001

본 연구는 번식기와 비번식기에 있어서 까치의 행동변화를 파악하기 위해 강원도 춘천시 동면 감정리에 위치한 강원도 산림개발연구원 시험림 및 부근지역에서 2000년 3월부터 2001년 2월까지의 기간동안 실시되었다. 조사지 내 전체 면척은 5.6$\textrm{km}^2$였으며, 전체 지역에서 까치의 둥지는 모두 49개가 발견되었다. 이중 2000년 봄철의 번식기동안에는 24개의 둥지에서 까치가 번식을 한 것으로 나타났다. 까치의 번식밀도는 4.3쌍/$\textrm{km}^2$였으며, 둥지의 평균거리는 평균 357.5m 인 것으로 나타났다. 까치에 부착한 전파발신기에서 발신되는 전파를 추적하여 번식기와 비번식기에 둥지로부터 이동한 거리는 큰 차이를 보였다.(t-test, t= 2.98, P<0.01). 번식기에는 평균 133.5m의 거리를 둥지로부터 이동하였으며, 최대 184m 이동한 것으로 나타났다. 그 결과 세력권의 크기는 약 5.6ha인 것으로 추정되었다. 또한 비번식이에 있어서는 둥지로부터의 이동거리 평균 384.2m 였으며, 최대 457m 까지 이동하였다. 6월에서 8월 까지는 보통 2~3개체 정도가 무리를 형성하였고, 12월에 가장 많은 12개체 정도가 하나의 무리를 이루었다. 번식기에 암컷과 수컷을 행동은 매우 다른 것으로 나타났으나(t=2.89, P<0.05)비번식기에는 큰 차이가 없었다(t=1.03, P>0.05).

• The Korean Journal of Ecology
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• v.27 no.6 s.122
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• pp.383-390
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• 2004

This study was conducted in three sites, Si-Hwa Lake, Dongman and Seoman island and Janguyeop island, from march, 1999 to september, 2002. The behaviors of pre-breeding season, territorial behaviors, reproductive ecology, foraging sites and behaviors, and the competition of reproduction and foods between intraspecific or interspecific of Eurasian Oystercatcher (Haematopus ostralegus) were observed in each studying sites. The breeding of Eurasian Oystercatcher started on the middle of April in Si-Hwa Lake and on the middle of May in Dongman and Seoman island and Janguyeop island. For intension of pair bond on pre-breeding season, Eurasian Oystercatcher foraged with pair and behaved male-female chasing flight behavior. The pair foraged with male and female before copulation. If other pairs and individuals approached in feeding site of pair, this pair attacked them with piping calling and intruder chasing flight. If continuos serial behaviors were not observed, the discrimination of male-female chasing flight and intruder chasing flight was difficult. Territorial behaviors classified four types; butterfly flight, calling behavior, chasing behavior, fight behavior. The important foraging sites in Si-Hwa Lake are the land place in Daeboo island, tidal flat of Bangameori, tidal flat a front of a stationary net for catching fishes and tidal flat a front of a view station for bird watching. Eurasian Oystercatcher foraged at tidal flat on low water of the tide and foraged at feeding sites near island on flood tide in Dongman and Seoman island. Eurasian Oystercater in Janguyeop island usually foraged feeding sites near island, because water level was not different between low water of the tide and flood tide. Eurasian Oystercatcher competed on foods of intraspecific and interspecific. They chased for taking foods by force in feeding sites and drove out intruders in feeding sites. The foods interspecific competition happened with Black-tailed Gull (Larus crassirostris). Eurasian Oystercatcher was robbed of foods and attacked by Black-tailed Gull. The individual of food competition with Black-tailed Gull was low foods intake rate comparison with other feeding sites and this individual flied out other feeding sites.

• Proceedings of the Zoological Society Korea Conference
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• 1995.10b
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• pp.195.1-195
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• 1995

• Korean Journal of Environment and Ecology
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• v.26 no.2
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• pp.186-191
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• 2012

The Chinese Sparrowhawk($Accipiter$ $soloensis$) is the most common breeding raptor in Korea, but its spatial use in the breeding season has been poorly documented. Therefore, to estimate the territory and home range sizes of breeding sparrowhawks, six territorial males(four in 2005 and two in 2006) were observed from June to July in Gyeonggi Province, the Republic of Korea. Main perches, which were used repeatedly(more than three times) or where apparent territorial behaviors were observed, were identified and the locations were analyzed by GIS software. According to the 100% Minimum Convex Polygons which were identified from $25.2{\pm}5.3$ perches, Chinese Sparrowhawks occupied $4.62{\pm}0.90$ ha for breeding territories and used $22.57{\pm}5.12$ ha for their home ranges. These estimates showed larger spatially occupied areas than those in one previous report, but this study suggests that Chinese Sparrowhawks intensively use small areas throughout the breeding season. This result also implies that the sparrowhawks have the potential to be significantly affected by any habitat changes and resource exploitation in the small areas(particularly in small rice paddies of 0.6-2.0 ha) which they largely rely on for food. Although this study was based on observations solely for territory size estimations, this study may be worthwhile as preliminary pilot research for Chinese Sparrowhawk conservation, management, and further studies.

• The Korean Journal of Ecology
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• v.26 no.1
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• pp.1-4
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• 2003

In diurnal activity of the black-crowned night herons on breeding season, activity budget was that male were standing(29.5%), preening(21.5%), comfort(10.9%), and female were resting(26.3%), repairing (18.4%), preening(15.3%) in sequence. Activity budget was high significant between male and female(p<0.01). In case of activity-time budget sequence, male was standing(38.7%), locomotion(33.8%), preening(11.5%), and female was resting(55.4%), standing(18.4%), preening(9.4%). Therefore, activity-time budget was significantly different in male and female(p<0.01).

• Korean Journal of Environmental Biology
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• v.37 no.1
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• pp.88-92
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• 2019

The objective of this study was to report the group mating of Asian Keelback snake, Hebius vibakari, in South Korea. On May 20, 2009, the group mating of H. vibakari was observed in the Maeng-gol do, Jindo-gun, Jeollanam-do, in the rocky area (107 m above sea level) on the ridge of the island. Six female and five male snakes made a form of mating behavior called "mating ball". Two couples showed "tail-wrestling" which is the copulation behavior in snake species. During the mating, the temperature and humidity were $25.7^{\circ}C$ and 59%, respectively. The result of this study was the first case report of the group mating in H. vibakari, a rare reptile.

• Korean Journal of Ornithology
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• v.25 no.2
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• pp.101-105
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• 2018

On 22 June 2018, we observed the breeding of the Pied avocet (Recurvirostra avosetta) at landfill sites in Saemangeum, Jeollabuk-do Province. The breeding ground was a temporary swamp, and four juvenile were constantly observed with adult bird. This observation is the first breeding record of Pied avocet (Recurvirostra avosetta) in Korea.

• Journal of Wetlands Research
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• v.18 no.4
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• pp.350-356
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• 2016

The biggest factor in the success of breeding animals is selection of foods, which is determined by quality and quantity of habitats(Newton, 2003), in the case of This high biomass wetlands as an indicator of ecosystem function about Common Kestrel's choice of hunting area is expected to be an important clue of quality and quantity of habitats. For this study, it is divided into four types(Glasslands, Paddy fields, Dry fields, Rparian land) about Common Kestrel's hunting area in Yugu-eup, Gongju-si, Chungcheongnam-do, Recorded the behavior of Common Kestrel for three years during the breeding season from March to June(2014~2016). Result of investigation, hunting area showed a high hunting behavior in riversides and flight-hunting was frequently investigated from may to June. In addition flight-hunting's main food acquisition is mammal(the vole), while perching behavior's main food acquisition is insect according to the fact flight-hunting were mainly done in riversides, perching behavior were highly investigated than flight-hunting at glasslands and paddy fields and dry field. Hunting spot's coverage rate of plants covering the ground showed differences depending on hunting areas, but height of plants were not significant. Height of the plant according to hunting methods of flight-hunting to catch mammal(vole) was analyzed to prefer lower height than perching behavior Based on these results riversides are considered as a very important environmental factors for Common Kestrel's prey selection in breeding session.

• Journal of the korean veterinary medical association
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• v.26 no.4
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• pp.203-210
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• 1990

• Proceedings of the Zoological Society Korea Conference
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• 2003.08a
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• pp.132.2-132
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• 2003