The King of the Yanbaru forest – Holst’s frog

The Holst’s frog ( Babina holsti ) is a rare species found  in northern Okinawa. It is currently listed endangered on the IUCN red list. It is designated as a natural monument by the Okinawa Prefecture.  This large amphibian is decreasing in numbers due to habitat loss.

  • Scientific name: Babina holsti (Boulenger, 1892)
  • Distribution:  Northern Okinawa-Japan
  • Habitat:  Forest streams 
  • Diet:  Insects, worms, snails and small reptiles
  • Average Size:  100mm -125mm
King of the Jungle

King of the Jungle

The Holst’s frog is the largest frog found on Okinawa. It hides in holes, crevices and small caves in the day.

Searching for food

Searching for food

This is a size comparison photograph taken with the Iphone 6s. This is a good size  frog but they do get larger than this.

Comparison - Iphone6s

Comparison – Iphone6s

Photographed on white for the Meet Your Neighbours global biodiversity project. All images are used for conservation awareness and educational purposes.

MYN technique -Holst's frog

MYN technique -Holst’s frog

The juvenile’s have a dark brown  patch on the top section of the body. They bland in very well with their habitat.

Juvenile Holst's frog

Juvenile Holst’s frog

Juvenile holst's frog

Juvenile holst’s frog

They are sometimes found searching for food on the back roads of Northern Okinawa.

Juvenile Holst's frog - Yanbaru

Juvenile Holst’s frog – Yanbaru

Be careful and pay close attention to crossing wildlife! 

Crossing wildlife

Crossing wildlife

Lets protect the wildlife of Okinawa!

The Ryukyu Robin, Northern Okinawa

The Ryukyu Robin (Larvivora komadori namiyei)  is a subspecies endemic to northern Okinawa.  It is listed as Near Threatened on the IUCN red list of threatened species.  Its main threats are habitat loss and the introduction of invasive species.

  • Scientific name:  Larvivora komadori namiyei (Stejneger, 1887)
  • Distribution:  Northern Okinawa
  • Habitat:  Dense leaf littered forests 
  • Diet:  Earthworms, spiders, insects and fruit
  • Average Size:  140mm 

The Ryukyu robin in its natural habitat. The male has the distinctive black throat and face.

Male Ryukyu Robin

Male Ryukyu Robin, Yanbaru forest

The female Ryukyu robin perching on a guide rope at Hiji falls, Okinawa.

Female Ryukyu robin

Female Ryukyu robin (Larvivora komadori)

A male Ryukyu robin searching for insects on the ground.

Male Ryukyu robin

Male Ryukyu robin

Ryukyu robin

Ryukyu robin

Ryukyu Robin -Yanbaru forest

Ryukyu Robin -Yanbaru forest

These small birds are often seen early in the morning feeding on insects on the road. Watch your speed and pay particular attention between dusk and dawn.

Watch your speed!

Watch your speed!

A male Ryukyu robin that was killed by a speeding motor vehicle on Route 2 in northern Okinawa.

Roadkill  Larvivora komadori

Roadkill – January 17th 2016

Let’s protect the beautiful wildlife of Okinawa, Japan.

Have a great day!