Trail Camera for Wildlife Living in a Tree Hollow③ (Japanese Dwarf Flying Squirrel, Dormouse and Japanese Marten)


This trail camera has been set in the beach forest on the Masuzawa Trail of Mt. Funagata in Miyagi Prefecture.
It is aimed for a tree hollow on “NEZUKO” (Thuja standishii).
The tree hollow is about 2m above the ground and distance between the trail camera and the tree hollow is 1.8m.

This article is for people who are interested in Japanese wildlife, nature and trail camera.
You will see a part of life of Japanese Dwarf Flying Squirrel, Dormouse and Japanese Marten.

Good afternoon, I’m KON.

I have set the trail camera from May 29 to July 23, 2020.

You can see the previous article from the link below.
Trail Camera for Wildlife Living in a Tree Hollow ② (Japanese Dwarf Flying Squirrel and Dormouse)

Previously, Japanese Marten didn’t visit the tree hollow.
In stead of it, Dwarf Flying Squirrel and Dormouse visited some times.

I expected with joy that Owls use the tree hollow for nest or roost, but they didn’t come.

I will report what I found from the trail camera data for about 2 months.

Dates and frequency that Japanese Dwarf Flying Squirrel visited the tree hollow.

Japanese Dwarf Flying Squirrel visited the tree hollow for 23days from May 29 to July 23.
It visted most frequently in June.
It visited 17days out of 31days.

The trail camera captured that Japanese Dwarf Flying Squirrel entered the tree hollow on June 8, 9, 13, 16, 17, 21, 24, 28, 29 and July 1.
The total was 11 times.

The trail camera only captured the figure going into the tree hollow and never captured the figure going out.
So I guess Japanese Dwarf Flying Squirrel entered the tree hollow more frequently.

It always appear below the picture.
Does it move to this tree by foot?

I was wondering why Japanese Dwarf Flying Squirrel visit this tree hollow so frequently.
It doesn’t use here.
I asked Professor of Japanese Dwarf Flying Squirrel and his answer was『Dwarf Flying Squirrel checks the tree hollow when it passes by near here because  the tree hollow suitable for it is not everywhere.  』

A Japanese Dwarf Flying Squirrel doesn’t care big ants at all.

Big black ants have lived in the tree hollow since May.
Ant colony might be bigger in June because more ants walked around the tree hollow.

I thought animals usually don’t enter a tree hollow where ants live.
However, Japanese Dwarf Flying Squirrel entered without hesitation.

I guess it is more correct that ants do not settle in a place where animals move in and out rather than that animals do not move in and out because ants live.

The frequency of visiting the tree hollow increased in mid June.
Maybe because of it, ants picture has not been taken since June 17.

I don’t know ants avoided Japanese Dwarf Flying Squirrel or it destroyed ants colony.

Threatening behavior of Japanese Dwarf Flying Squirrel.

One interesting behavior was recorded.

Japanese Dwarf Flying Squirrel was thumping on the tree with its foot.

Professor of Dwarf Flying Squirrel taught me that it is called “Foot Thumping” or “Foot Stamping”.
It means threatening behavior.

In his experiment of 「encounter of snake and Japanese Dwarf Flying Squirrel」, mother Japanese Dwarf Flying squirrel did it to the snake.  

The professor said that this threatening behavior is common among Squirrel group.
I noticed when I met Japanese Squirrel, the squirrel sometimes showed me this behavior.

I am curious who was near the tree at that time.
Same species and same sex, or its enemies.

Dates and frequency that Dormouse visited the tree hollow.

Dormouse visited the tree hollow only on July 15 and 17.
Dormouse wanted to look into the tree hollow when it walked nearby.

It sometimes stopped by the tree hollow.

Japanese Marten with summer fur!

Japanese Marten came here only on July 19.
when it was near the tree hollow, it found something a bit far away and went out of view.

Japanese Marten had beautiful cream-colored winter fur in April.

Japanese Marten with winter fur, on April 14.

It had summer fur in June.
Its fur was shorter than winter and color got dark orange.
Its face and foot were black.

Japanese Marten with summer fur, on June 19.

It is rare to see Japanese Marten with summer fur so it is lucky to see it even indirectly.
According to a hunter, Japanese Marten is nervous in summer because it gets carnivore.
For your information, it tends to be herbivore in autumn and winter.

I think there are two reason why it is difficult to see it.
① It gets bushy in the mountain.
② The color of Japanese Marten adjusts to the environment.

A ant works 24/7.

It is really surprising for me that ants work 24/7.

In the video, ants work at night just like in daytime.
I thought insects they live in daytime stay still at night.

A summary of trail camera research in June and July

For most animals in Japan, June and July are breeding and parenting season.
But nobody use this tree hollow as nest or roost.

In June, Japanese Dwarf Flying Squirrel visited here frequently.
It must have been interested in here, so maybe it will use the tree hollow in the near future.

Dormouse and Japanese marten rarely visited here.

I keep the trail camera on the tree and collect data in a couple of months.

If you are interested in the next episode, please click the below link.↓
Trail Camera for Wildlife Living in a Tree Hollow④ (Japanese Dwarf Flying Squirrel, Dormouse and Small Japanese Field Mouse)

【today's bird (July 23) -extra-】

Brown-headed Thrush, Narcissus Flycatcher, Blue and White Flycatcher, Japanese Green Woodpecker, Japanese Green Pigeon etc



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