This survey showed that Naujan Lake is an important stop-over for migratory birds. A total of 9,225 coants of waterbirds belonging to 14 species and six families were recorded and identified along Naujan Lake. The counts were obtained using a combination of survey techniques, namely: imaginary transect counts, actual headcounts, ethnobiological interviews, and general observation. For food-habit analysis, three waterbirds, Aythya fuligula (Tufted duck), E g re tta alba (Great egret), wrd St e ma hirundo (Common tern) were selected to undergo stomach analysis and actual observation. In this way, their food preferences were determined. Through local interview and actual observation, the movement of the tufted ducks around the lake as well as their time of arrival and departure were described. The lake still possesses diverse amphibious and aquatic plants which are believed to sustain the seasonal visitation of these bird migrants. However, the vigorous fishing activities in the area pose a serious threat for them.
Ano de publicação
2005
Autores
Idioma
English
Palavras-chave
migratory pests, food habits, nutrition, ecology
Geográfico
Philippines
