On May 23, Mr. Kaihiko Kaneko, the secretary of the Urban Bird Study Group, the author of "Ginza Swallows", was invited as a lecturer, and a field event "Ginza Swallow Observation Meeting" hosted by Nature Information Plaza Marunouchi Suzurikan was held. .
"Ginza Swallows" is a 30-year study of the lovely surprising ecology of urban swallows by Kaihiko Kaneko for 30 years.
Since ancient times, swallows have been popular as a symbol of Masutori.
Every spring, swallows come to Ginza from Southeast Asia, a wintering area.
The distance of the trip is several thousand kilometers.
However, the number has decreased dramatically in recent years.
Currently, there are three nesting locations in Ginza, which were nine locations 30 years ago,: Matsuya East Building (Ginza 3), Toto Hire Ginza Sales Office (Ginza 8), and Musashiville (Ginza 8).
As a cause
①The increase in the number of foreign enemy crows
②The number of places where nesting can be carried out has decreased due to the rebuilding of buildings.
(The rough concrete walls and beams, scaffolding like fluorescent lamps, deep eaves and eaves are lost.)
③The nest was dropped by a person who hates feces due to bird flu, etc.
It is conceivable.
As a unique ecology of swallows
①Creating a unique nest that uses only soil and dead grass
②A foraging method that catches flying insects, called so-called "swallow return"
(By the way, the swallow's food in the city center is 1 bird 2 bees ... bees of the Ginza bee project
They seem to be incorporated into the ecosystem.
Drinking scene while flying over the water
③They specialize in flying fast, their legs are short and unsuitable for walking, except when seeking mud from nest materials.
Seldom descends on the ground
In addition, above all, breeding forms that make good use of the existence of four people.
It's a good idea.
The swallows are somehow alive in Ginza.
①There are many street trees that serve as a source of insects, and there is a natural treasure trove of the Imperial Palace nearby.
②Many have been reclaimed, but there is still a nearby waterside (gliding on the surface of the water when drinking)
At the same time, side 3 reflecting the hearts of people (when repainting the wall, care not to drop the nest, or place it on a new nest stand on the wall without discarding the old nest when replacing the ceiling, etc.) Accept swallows and warmly watch the nest
It is said that there is a great deal of effort.
Once again, the "people's involvement" and empathy regarding the preservation of the ecological environment are reminded.
By the way, the swallow is 17cm in length and 32cm in length.
The throat and forehead are red, the belly is white, the black horizontal band on the chest, the elongated and pointed wings, and the tail feathers are deeply cut off.
Female tail feathers are shorter than males.
It is said that tail feathers have the role of changing direction and brakes during flight.
It hatches in two weeks after incubating, and for another three weeks, after the parent swallows carrying food, they nest.
I hope you will come to this city again next spring.
And I would like you to show me the smart and agile flight again.
(← Click to increase it.)
The annual "Rose Garden" is being held at the salon space "Royal Room" with terrace on the 10th floor of FANCL Ginza Square (Ginza 5), and the venue is filled with colorful rose flowers.
watching it on May 24 (Saturday).
with a parade of Nihonbashi and Kyobashi firefighting boys, color girls, and music bands, there were opening greetings and guest congratulations.
I thank the Japan Coast Guard and the Fire and Disaster Management Agency for their hard work to prevent marine accidents and rescue them.
