Bird's Egg

I found this bird's egg in the middle of my back yard, too far from any tree to have simply fallen out of a nest. Maybe it was stolen from a nest by a bluejay,[1] who then dropped it.


(Click on images to enlarge)



I have a book on bird's nests and eggs, but in this case I don't have a nest.

My best guess for this egg is either Eastern Meadowlark or Northern Cardinal.

_______________
[1] Bluejays are loud-mouthed jerks, but they certainly are pretty, aren't they?