この夏、複数のヤブサメの声をCさんと聞きましたが、その聞こえている範囲に違いがあることが判明しました。この夏、この事実を知ることができたのは、私にとって大変有意義なことでした。Cさんのご指摘を心から感謝いたします。
The inability to hear the song of Asian Stubtail is one of the indicators of hearing loss among older Japanese birdwatchers as high frequency band sound.
16/Jun/2024
In the summer of 2024, I still hear the Asian Stubtail voice. However I have to realize reality, that the range of my hearing is smaller. I am grateful to my birding friend for pointing this out, as it is difficult to know if I can't hear it unless birding with someone who can hear it at the same time.
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