Abstract
Avifauna of Shokanji Pond or Lake Saiko, National Institute of Technology, Gunma College was investigated for 100 months from April 2007. More than 80 species of birds including semi-endangered species were observed on the pond. In 2011, the pond was dredged and the construction work for the environmental preservation was completed. By comparing the avifauna before and after the construction, the effect of the construction on the biodiversity was evaluated. Little effect of the construction was shown when the number of the species and individuals of the wild birds of the pond such as ducks, herons and other waterfowls were compared before and after 2011.
