We have a local urban farm that sells fresh eggs, raw honey, and a myriad of honey-based products. Their aviary boasts many varieties of hens and roosters, quail, and even peacocks. While there I inquired about these small brown speckled eggs; the owner explained that they were quail eggs and put a few into my bag of purchases.
Although a bit foreign to me, many folks find quail eggs to be a delicacy, but I find them to be an excellent subject to paint. The brown egg in the back is a large chicken egg for size perspective.