ML201776071 IBC 1204530

視聴覚メディア・ノート

A group shown social feeding by swimming in a tight circle to create a whirlpool to cause food to come to the surface, which.....then can be skimmed and strained through the lamellae that line the edges of the bill.The background sounds are from a group of Black-necked Stilt in a shallow pond next to this pond. Elevation: 1 m. Date added to IBC: June 23, 2016.