Category Archives: Shiga

Butterflies

Shiga Prefecture in Japan is blessed with quite a few species of butterflies. A few species are shown here in photographs taken between April and September 5, 2018, when I also made a short video clip (music from “Redwood Highway” by Jason Shaw at AudionautiX.com.)

Asian swallowtails (Papilio xuthus, アゲハチョウ)

Old World swallowtail (Papilio machaon, キアゲハ)

Common copper (Lycaena phlaeas, ベニシジミ)

Eastern pale clouded yellow (Colias erate poliographys, モンキチョウ

Common sailor (Neptis hylas, リュウキュウミスジ)

Common bluebottle (Graphium sarpedon nipponum, アオスジアゲハ)

Common straight swift (Parnara guttata guttata, イチモンジセセリ)

Indian fritillary (Argyreus hyperbius, ツマグロヒョウモン)

Great Mormon (Papilio memnon thunbergii, ナガサキアゲハ)

Notes

The video clip and most photos were shot with an Olympus OM-D E-M1 Mark II camera and an Olympus M. Zuiko 40-150mm 2/2.8 PRO lens. A few photos were taken with a Panasonic Lumix DMC-LX9 camera (Japanese monolingual version of LX10/LX15).

All postprocessing was done on a Fedora GNU/Linux workstation. I edited the video clips and added titles with with Kdenlive, but I did not modify the colors or add any enhancements other than slow motion (1/4 speed) from the middle of the clip. Photos were organized and edited with digiKam.

Little Egrets at Yasugawa

Little egrets (コサギ) are very active at Yasugawa (野洲川) in early August.

When conditions are just right, many little egrets and a few great egrets (ダイサギ) and grey herons (アオサギ) feed on small aquatic creatures at the weir between Moriyama City on the left bank and Yasu City on the right. I recorded some of the action with video and still photos just after sunrise on August 6, 2018, and again in late afternoon on August 8, 2018.

Video

Photos – August 6

On August 6, 2018, some little egrets and a few great egrets were catching fish in shallow water above the weir in Moriyama City. Others were standing on the weir and feeding on small aquatic creatures.

Often one bird would chase away an interloper. They did not chase other species of birds, but when confronted by an aggressive crow the egrets did not back down.

Photos – August 8

On August 8, 2018, I went to the river late in the afternoon. The sun was behind my back, and there was a strong wind from the northwest (downstream).

As usual, some little egrets bullied others over territory

A few little egrets crowded up close to much larger great egrets (ダイサギ). Sometimes the larger birds snapped at the little ones when they got too close, but real conflict erupted only between birds of the same species. Once a great egret stopped feeding and marched off to confront another great egret.

Sometimes other birds appeared at or below the weir.

Some of the little egrets were feeding very actively.

As we can see in the video above, sometimes they would slip and fall before taking flight. It seemed that they had temporarily forgotten that they could fly. Of course, little egrets fly very well!

Notes

All photos and video clips were shot handheld with an Olympus OM-D E-M1 Mark II camera and M. Zuiko Digital 40-150mm f/2.8 PRO lens. Some closeup scenes were shot with the camera’s 2X digital teleconverter.

Music: “Kawai Kitsune” by Kevin MacLeod (incompetech.com), licensed under a Creative Commons Attribution 3.0 License

All postprocessing was done on a Fedora GNU/Linux workstation. I edited the video clips and added titles with with Kdenlive, but I did not modify the colors or add any enhancements. Photos were organized and edited with digiKam.

Other photos can be seen on my Flickr photostream. Videos are on my YouTube video channel.

Egret Rookery

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.

Eggshell below a great egret nest

Eggshell below a great egret nest beside Hyozu Taisha (兵主大社) in Gojo, Yasu City

Short feather below a great egret nest

Short feather below a great egret nest beside Hyozu Taisha (兵主大社) in Gojo, Yasu City

Nests and young birds were hidden in the treetops.

Egret nests and young great egrets (ダオサギ)

Egret nests and young great egrets (ダオサギ) in the woods beside Hyozu Taisha (兵主大社) in Gojo, Yasu City

Now and then an adult egret appeared, and I was lucky to see a cattle egret carrying a branch for a nest.

Cattle egret (Bubulcus ibis, アマサギ)

Cattle egret (Bubulcus ibis, アマサギ) in the woods beside Hyozu Taisha (兵主大社) in Gojo, Yasu City

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.

Crows along Yasugawa

On Sunday, March 18, 2018, I was cycling down the north bank of Yasugawa when I heard some noisy crows perched in nearby trees.

When I ride my touring bike, I carry a small audio recorder and microphones. For this recording I used a Sony PCM-M10 recorder and Clippy Stereo EM172 mics by FEL Communications Ltd. To mimic human hearing, a quasi-binaural sound image was made by placing the mics on either side of my bicycle handlebar bag. I prefer to use trees about the diameter of an adult human head, but I use the handlebar bag when I cannot find a tree.

Trek 520 touring bike with audio recorder and mics on handlebar bag in Yasu City

The Compass app on my iPhone shows the location, direction, and time.

Compass and geolocation app on bicycle handlebar bag in Yasu City

As we can see on the map, this location is between a river and near the edge of a suburban area. With aircraft overhead, vehicles on nearby roads, and rural and suburban human activities, this place is quite noisy, even on Sunday.

In everyday life we filter out much of the noise. When the crows are not so noisy, I suppose most people experience this environment as a peaceful and quiet little park, just as it appears in photographs.

Trek 520 touring bike in Yasu City

Trek 520 touring bike in Yasu City

One Day in December

On December 30, 2017, I rode my mountain bike downstream along Yasugawa (野洲川) to Moriyama City (守山市). From the riverbank I rode to Hatonomori Park (鳩の森公園). I shot a few video clips and still photographs of birds that I saw.

Photos

Most cormorants (カワウ), great egrets (ダイサギ), and grey herons (アオサギ) fly south in late fall. I was pleased to see a few at the river in winter.

Great cormorants (カワウ) and great egrets (ダイサギ)

Great cormorants (カワウ) and great egrets (ダイサギ)

Great cormorants (カワウ) and grey heron (アオサギ)

Great cormorants (カワウ) and grey heron (アオサギ)

Great cormorants (カワウ) and grey heron (アオサギ)

Great cormorants (カワウ) and grey heron (アオサギ)

Meadow buntings (ホオジロ) were active along the riverbank, but most were hiding in bushes.

Meadow bunting (ホオジロ)

Meadow bunting (ホオジロ)

I often see Oriental turtle doves at Hatonomori Park in Moriyama City (滋賀県 守山市 鳩の森公園), but usually they avoid people. This one at the park entrance did not seen to mind my presence as long as I remained still.

Oriental Turtle-Dove (キジバト)

Oriental turtle-dove (キジバト)

Oriental Turtle-Dove (キジバト)

Oriental Turtle-Dove (Streptopelia orientalis, キジバト) at

Usually I see olive-backed pipits (ビンズイ) in groups, but this one was wandering around the park alone.

Olive-backed pipit (ビンズイ)

Olive-backed pipit (ビンズイ)

Olive-backed pipit (ビンズイ)

Olive-backed pipit (ビンズイ)

Daurian redstarts (ジョウビタキ) are welcome visitors in winter. Males often pose where they can be seen.

Daurian redstart male (ジョウビタキ)

Daurian redstart male (Phoenicurus auroreus, ジョウビタキ)

Daurian redstart male (ジョウビタキ)

Daurian redstart male (Phoenicurus auroreus, ジョウビタキ)

Notes

Video and photos were shot hand-held with an Olympus OM-D E-M1 Mark II camera and a 40-150mm F2.8 PRO lens.

Music: “Lexicon” by Jason Shaw at AudionautiX.com, licensed under a Creative Commons Attribution 3.0 Unported License.

Video was edited with Kdenlive on a Fedora GNU/Linux workstation.

This video is also available on YouTube.