Murmurations of starlings and wren duets

This post contributed by Liza Lester, ESA communications officer   On the slopes of the Antisana volcano in Ecuador, the plain-tailed wren sings a sophisticated song. It is not a solo, but a duet, a rapid-fire call-and-response so fast that you might mistake the singers for a single bird, even if you have the luck to stand betwixt them and hear it in Dolby surround. Duet of the plaintailed wren. The female motifs are magenta, the...

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