White-crowned Sparrow South Coast Botanic Garden Palos Verdes Pennisula California 142
"In some species of birds, second-year males differ in their plumage and/or their songs from older, more mature birds. In white-crowned sparrows, second-year males have some plumage differences from older males. But this study focused on another difference: second-year males will often sing two or more versions of their species' song before they settle on the one that they will use the rest of their lives.
That means older white-crowned sparrows can tell a youngster by the fact that it will sing more than one version of the species song."
sciencedaily.com
I can't get enough of the White-crowned Sparrows songs and spaceship noises.
White-crowned Sparrow South Coast Botanic Garden Palos Verdes Pennisula California 142
"In some species of birds, second-year males differ in their plumage and/or their songs from older, more mature birds. In white-crowned sparrows, second-year males have some plumage differences from older males. But this study focused on another difference: second-year males will often sing two or more versions of their species' song before they settle on the one that they will use the rest of their lives.
That means older white-crowned sparrows can tell a youngster by the fact that it will sing more than one version of the species song."
sciencedaily.com
I can't get enough of the White-crowned Sparrows songs and spaceship noises.