Birds of the forest floor, such as antbirds and curassows ... against predator birds such as merlins or peregrines. By singing, the skylark signals to the merlin that it is in good condition ...

On a tree beside me, I spot a Boyd’s forest dragon—a handsome lizard with a crest on its head and spikes down its spine. Somewhere nearby, insects are singing. But of a big bird—no sign.

The striking rose-breasted grosbeak is a common bird of wooded habitats across much of eastern and midwestern North America. Singing from the canopy of a deciduous forest, even a brightly colored ...

Merlin records the birds singing in your yard or a park, then highlights the names of the various songbirds on your cellphone. That makes it much easier to learn birdsongs than when old birders ...