Tae-Han Kang

Analysis of the Summer Season Home Range of Domestic Feral Cats (Felis catus) - Focused on the Surroundings of Rural and Suburban Areas -

Abstract In order to analyze the home range of feral cats residing in the surroundings of rural and suburban areas, we collected coordination information data from five feral cats. As a result of such research, 100% MCP was defined as minimum 31,500 and maximum 351,900, and 95% KR was defined as minimum 9,400 and maximum 502,800, 75% KR was defined as minimum 3,600 and maximum 126,900, and 50% MCP was defined as minimum 1,800 and maximum 51,700. The home range of feral cats was also analyzed during daytime and nighttime, and all five individuals showed a wider home range during the nighttime than daytime. The analysis of gender shows that the average home range of female feral cats is larger than the average of males. Meanwhile, the results of information data with wide-open areas such as farm land and terrace land on the river showed that the analyzed value was increased generally, and showed variable values depending on the gender and size of each individual feral cat.

Avifauna at Spring season in Yubudo island, Korea

This study was conducted between March and July of 2010 in the area of Yubudo (Is.) in order to assess its avian fauna. A total of 39,121 counts of 37 species were observed over 5 sessions. Important dominant species included the dunlin (Calidris alpine) (48.0%), followed by the bar-tailed godwit (Limosa lapponica) (26.2%), far eastern curlew (Numenius madagascariensis) (5.2%) and the great knot (Calidris tenuirostris) (5.1%). Among the dominant species, the dunlin and the bar-tailed godwit showed significant increase in count, while the great knot showed a decrease. The far eastern curlew, eastern oystercatcher (Haematopus ostralegus) and the Indian curlew (Numenius arquata) did not show any significant difference when compared to previous studies, in terms of both migratory bird count and migratory pattern. Such migratory pattern of dominant species seems to be the result of large scale environmental changes.

The Using Rate of Breeding Birds by Artificial Nest Boxes Type at Orchard Area

We installed two types of artificial nest boxes, made by wood chip mixed with cement (A-type) and recycled styrofoam (B-type) at the orchard areas (Apple Research Institute) in Sobo-myeon, Gunwi-gun, Gyungbuk Province in march 2003. And then, the breeding birds using the nest boxes were recorded during the breeding season of 2003 and 2004 for finding the effectiveness of two different nest boxes. A total bred birds were five species, Great Tit (Parus major), Coal Tit (Parus ater), Varied Tit (Parus varius), Tree Sparrow (Passer montanus) and Yellow-rumped Flycatcher (Ficedula zanthopygia). Sixteen pairs Great tits were bred in the nest boxes, so this species was the most dominant breeder and followed by Coal Tit three pairs, Varied Tit three pairs, Tree Sparrow two pairs and Yellow-rumped Flycatcher two pairs. The using rate of nest boxes was 28.2% (11 out of 39) and 38.5% (15 out of 39) in 2003 and 2004, respectively. Thus, the using rate was increased in 2004. Birds were using only A-type nest boxes, so the using rate of A-type was 68.0% (17 out of 25) while none of bird used B-type (0 out of 14). From this result, the breeding bird showed preference for better nest boxes (A-type) when there were abundant breeding sites.