This is the tweets of birds in Fukuura Island, a small island in the Matsushima bay. This island is home to many riches of vegetation, insects, and birds. I recorded this in the 12th of April 2019 around eleven in the morning under the trees of this island.
Thousands of birds are tweeting among the branches of pine trees with high intensity. The birds have a relatively high pitch between 2100 to 5000 Hz, which if heard continuously can make our ear feel tired. In the distance is a sound of boat engines splitting the sea around Matsushima port. The sounds of the birds make the soundscape of Fukuura Island very lively.