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公益財団法人 日本鳥類保護連盟は野鳥をはじめとする野生生物の保護と普及啓発を目的とする団体です。

― Today Birds, Tomorrow Man ―

 2014 Lithuania Group Project Report

   International Group Project is funded by AEON Environmental Foundation.
                      
Cooperative research

This cooperative research of the little terns was conducted in Lithuania.
Date: June 23rd ~July 4th 2014
Project members:
      Yuzo Murofushi JSPB Director
      Takashi Fujii  Research Manager
      Petras Kurlavičius  Professor of Biology, Lithuanian University of Educational Sciences
      Ingrida Meškinytė
      Gvidas Laukaitis


Survey of breeding area

With help from Dr. Kurlavičius, our team surveyed the breeding area of the little tern in Kaunas. We were able to confirm two breeding pairs and non-breeding individuals for total of 8 birds. A few days prior, we were told there was one more breeding pair, but due to increase in water level the visiting sight became flooded.

コアジサシの繁殖地  調査用のボート                                          inflating the raft

               nest of little tern and other spieces on island
コアジサシの巣 アジサシの巣 コチドリの巣
   nest of little tern         nest of common tern     nest of little ringed plover

Locating little tern colonies by boat

By use of boat we observed the little tern breeding sight on Neman River.

船で探索 船で探索

Through analysis we located and confirmed two little tern colonies and one possible breeding pair. There were about 20 individuals in the flock observed at the research area. We confirmed two common tern colonies, one of which was next to one little tern colony.


コアジサシが営巣していた島 島にいたコアジサシのペア
     breeding area on island         little tern breeding pair on island


もう一つの営巣していた島 抱卵中のコアジサシ
      breeding area on island              possible inculating


Island's geography and nest location

We surveyed the island where little terns were breeding and studied the island's geography and nest locations. One nest which once contained two eggs was reduced to only one. One colony contained one more nest and the nest contained one egg.

島の形状の計測 卵と巣の大きさを計測
  surveying the island's geography        measuring egg and nest sizes


計測結果から整理した島の概要
Data-map of the island's geography and nest locations


Capture of little terns

We set bownet traps around nests and placed video recorders to capture footage of little terns in Kaunas.

コアジサシの捕獲 コアジサシの捕獲 コアジサシの捕獲
                   little tern trapping sequence


捕獲されたコアジサシ 装着されたジオロケーター
    captured little tern           geolocator attached to little tern


専務理事とペトラス教授 
  JSPB Director and Professor Kurlavičius


Observing released little terns

We observed little terns released with geolocators attached in Kaunas.

ジオロケーター個体を観察 観察したコアジサシの個体

We researched the breeding area earlier confirmed by boat. The nests on the island were trampled and disturbed. People of Lithuania are not informed of the necessity for little tern conservation, therefore eggs and young are crushed by people working along the river.

食い荒らされていた島の卵


Signing Ceremony

On July 3rd, a cooperative agreement contract was signed. For more information click here.
On July 4th, we departed from Lithuania and arrived in Japan on July 5th. Professor Kurlavičius and Ms. Meškinytė continued to capture and study the little terns after we returned home.


バナースペース

公益財団法人 日本鳥類保護連盟
Japanese Society for Preservation of Birds

〒166-0012
東京都杉並区和田3-54-5
第10田中ビル 3階

TEL 03-5378-5691
FAX 03-5378-5693

3rd floor, the 10th Tanaka Bldg,
54-5, Wada, 3-chome, Suginami-ku, Tokyo #166-0012,
Japan

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