Bird Identification: CLOSED: CLOSED: Anyone know this bird?, 2 by kawasemi

kawasemi wrote:
Saw this bird near Chikugo River, (about 5 miles inland from where mouth emptied into the Sea of Japan) in Kyushu Japan. Liked hanging out in the reeds and trees both. Almost constantly singing, but it wasn't beautiful. More like cack cack cack cacking. It had a slightly down turned upper bill. Legs quite long, and body about the size of a starling I would guess. They were quite shy, and stayed well hidden most of the time. Appreciate your help, Kawasemi