Vintage jadeite Westmoreland glass bird on a nest Uranium lid

RARE Vintage Westmoreland glass bird or robin on a nest. Jadeite/Uranium/ mint green milk glass. No chips or cracks. Gorgeous, hard to find color.
Mismatched piece? there is a subtle difference in the two greens in normal lighting.

Both pieces are variations of mint green or jadeite color;
The lid is more translucent on the edges with pinkish gold tint when you hold up to direct light like opalescent glass. (Most notably on beak and tail) The lid has a nice bright reaction to UV, the base is not reactive.

Base or nest is mint green milk glass / slag glass? The edges have white highlights here and there. The top rim is more opaque but there is a thin line of translucent edge on the bottom that looks like the edges of the lid. unusual find