Great egrets (ダイサギ), cattle egrets (アマサギ), and other birds nest in the woods at Hyozu Shrine (兵主大社) in Yasu City, Shiga Prefecture, Japan. I recorded the sounds of the rookery on Sunday, May 27, 2018, and posted a six-minute sample on radio aporee ::: maps and SoundCloud.
The woods are between a large shrine and Yasu City athletic facilities (野洲市中主Ｂ＆Ｇ海洋センター). The white spots in the satellite image of the woods are egrets.
The recording location was not very photogenic. White bird droppings covered everything in the area. On the ground near the tree that held my recorder broken eggshells and a feather indicated young egrets above.
Nests and young birds were hidden in the treetops.
Now and then an adult egret appeared, and I was lucky to see a cattle egret carrying a branch for a nest.
Recording and post-processing
This recording was made with a Sony PCM-M10 recorder and FEL Communications Clippy Stereo EM172 Microphone tied to a tree. Since I was near the south edge of the woods, I placed the mics placed slightly forward of center facing north.
Audio post-processing was done with Audacity on Fedora Workstation, a Linux system running on a Lenovo ThinkStation 20 computer. I trimmed this excerpt from a longer recording and raised the overall volume. No other digital signal processing was done.