柏の葉第2水辺公園のウグイス, Japanese bush warbler at Kashiwanoha 2nd Waterside Park
柏の葉第2水辺公園は遊水地のため灌木や雑草が自然に生えている。この環境はウグイスの生息に適している。木はあまり密に生えていないので比較的ウグイスの姿を見つけやすい。数年前からこの場所をテリトリーにして高らかにさえずるウグイスがいた。でも昨年はそのさえずりを聴くことはなかった。たぶん天寿を全うしたのだろう。今年になって若いウグイスがテリトリー宣言を始めた。警戒心が強くなかなか姿を探せなかった。この日（Jun 27, 2024）ようやく葉の隙間から姿を探せた。
Kashiwanoha 2nd Waterfside Park’s bushes and weeds grow naturally because Kashiwanoha 2nd Waterside Park is a floodplain. This environment is suitable for the habitat of the Japanese bush warbler The trees are not too dense, so it is relatively easy to find the bush warbler. For several years, there has been a Japanese bush warbler that has made this place its territory and sings loudly. However, last year I did not hear its song. It probably died of natural causes. This year, a young Japanese bush warbler began to declare its territory. It was very cautious and it was difficult to find it. On this day (Jun 27, 2024), I was finally able to find it through the gaps in the leaves.