• Proceedings of the Zoological Society Korea Conference
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• 1999.10b
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• pp.85.1-85
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• 1999

No Abstract, See Full Text

• Journal of Ecology and Environment
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• v.34 no.2
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• pp.167-174
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• 2011

Black-billed magpies (Pica pica) are a highly sedentary species due to their short and round wings, which are not adequate for long distance flights. We investigated geographic variation in the vocal signals of magpies residing in South Korea and Japan (subspecies sericea). Based on the magpie's limited dispersal ability, we predicted that the variation in vocal signals of black-billed magpies could be explained by geographic barriers such as mountain ranges and straits. We analyzed four-syllable chatter calls of magpies from five localities in South Korea, which are separated by mountain ranges (Seoul, Daejeon, Daegu, Gwangju, and Busan), and two island localities separated from the mainland by straits (Jeju in Korea and Saga in Japan). We found significant differences in the characteristics of magpie chatter calls recorded in the seven localities, and the variation pattern was independent among the variables. Mainland-island differentiation and north-south differentiation were observed. In general, magpies on Saga were the most distinctive. North-south differentiation was observed among the Korean mainland localities. However, the pattern was not related to the presence of putative geographic barriers. We hypothesize that the patterns of geographic variation in the structure of magpie chatter calls residing in South Korea might have been shaped by a sudden expansion of magpies followed by low level of local isolation, which may have led to vocal differentiation. Along with elucidating the vocal environment of Korean magpie populations, more extensive sampling is needed to clarify the functional aspects of geographic variation in the vocal signals of Korean magpies.

• Journal of Ecology and Environment
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• v.30 no.2
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• pp.195-199
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• 2007

Statistical tools for determining sex in the sexually monomorphic black-billed magpie based on morphological characters have been developed based on studies of European and North American populations. However, since no morphological method has been developed for black-billed magpies in Korea, it has been difficult to conduct field studies that require information about the sex of individuals. We present two discriminant equations for determining sex of second-year (SY) and after-second-year (ASY) magpies in north- and midwestern part of South Korea. Based on morphological measurements on 105 SY (56 females, 49 males) and 72 ASY (36 females, 36 males) individuals, we found body mass, wing chord, and head length to be the most useful features for morphological sex determination. The accuracy of our method was 86.5% for SYs and 93.1% for ASYs, which is similar to values reported previously from American and European magpies. Since the equations contain morphological traits which are only minimally susceptible to seasonal variation and measurement errors, our discriminant equations should be both useful and robust for sex determination on black-billed magpies in the northern and mid-western regions of South Korea.

• Korean Journal of Environment and Ecology
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• v.7 no.1
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• pp.29-34
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• 1993

This study was conducted to investigate to compare avifauna at Taegosa area in Pukhansan with Kamapong area in Inje-gun, Korea. The observed birds at Taegosa in Pukhansan and Kamapong area were 35 individuals on species and 113 individuals on 29 species respectively. In Pukhansan area, there was severely avifauna diminishing in July in which users were concentrated. Pica pica sericea and Streptopelia orientalis orientalis were observed the dominant species in Pukhansan area and Kamapong area respectively. There were two species of national monument in these surveyed area, Otus scops stictonotus in Pukhansan area and Falco tinnunculus interstinctus in Kamapong area. Cuculus saturatus horsfields, Cuculus micropterus micropterus and Eurystomus orientalis calonyx were found out in Kamapong area to the rare bird. Species diversity and avi-ecosystems in Kamapong area were seemed to good, whereas in Pukhansan area, there was relatively poor avifauna caused by isolating with surrounding ecosystem, overusing by visitors beyond capacity and heavy acid rain. Therefore avifauna protection plans sould be made and carried out for Pukhansan National Park by thorought study with experts.