My first impression and educated guess after listening to it would be Song Thrush, however, a few things bug me: the repeated low wavy warbles, and the up- and downward glissandi (for lack of a better name). The first recording is clearer and more varied than the second, even though both were recorded almost immediately one after another. Is there a barely audible Robin in the background? Even if indeed, the question of the low warbles still remains.
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2023-04-15 19:39 (song 1).wav
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2023-04-15 19:44 (song 2).wav
drive.google.com
