Last summer I watched a young sparrow dithering around on the gutter of the house next door, obviously scared to try to fly.
There is about three feet's distance from that gutter to the flat roof of our front porch, which is directly under the window of this room.
Finally a cock sparrow, presumably the youngster's daddy landed in the gutter, flew across here, flew back, chirped as if to say, "Now you try!" Scared baby bird still dithered, until Daddy shoved her off the gutter, when she flew happily and landed safely on my window ledge, then flew back to daddy practically crowing in triumph.