An immature White-crowned Sparrow soaking in some of the golden morning sunlight.

We love listening to adults sing their songs each spring and according to the All About Birds website:

A young male White-crowned Sparrow learns the basics of the song it will sing as an adult during the first two or three months of its life. It does not learn directly from its father, but rather from the generalized song environment of its natal neighborhood.bird

https://www.allaboutbirds.org/guide/White-crowned_Sparrow/overview