Donna, this was not yarn in/on the nest – it was definitely moss, although it had been inside this shrub since last year so could have just developed moss, and was not put there by the parent.
Tammy, no it didn’t look like this European Robin, and the Robin eggs around here are definitely blue, but then again, this nest was quite old. It is possible it was a mockingbird, as I had seen & heard them around here, and my next door neighbor has had them nest in her yard in the bushes – and this nest would have been about three feet off the ground in the shrub, which fits your description. So, maybe mocker – quite hard since it was so old.
