BTO Bird ID video - Nightingale and Other Night Singers
Contrary to popular opinion, Nightingale is not the only bird that sings at night. In fact, due to it's recent decline, you are more likely to hear other birds singing after dark. This film illustrates the difference in song between the four most common 'Night Singers' - Robin, Blackbird, Song Thrush and of course, Nightingale.
Free:
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