Monitoring of Migratory Birds at Brgy. San Diego Lian Batangas. Approximately 2,400+ of bird species (Cattle Egret, Great Egret, Unidentified Egret and Unidentified Heron) observed during the monitoring. On the otherhand, 2,200+ bird species ( Cattle Egret, Little Egret and Unidentified Egret observed during the monitoring at Sitio Maibon, Brgy. Palanas, Lemery, Batangas.