Bird Watching: Bluebird thread Number 5, 1 by 2dCousinDave

2dCousinDave wrote:
Actually, the nest, and particularly the cup portion, was even neater before she began laying eggs (and I began pulling down the front edge so I could get a more unobstructed picture).

As to the possible color flaw, when I looked just now I found she had rolled the eggs again, so that the part of that egg is no longer visable to me. I do see that there is an apparent color flaw on a different egg. I still believe these are color flaws and not tissue or some other foreign substance. Bluebirds are particularly neat and I have never seen such foreign materials carried into a nest.

We may never know for certain because if they hatch today, as I believe they will, Mama will probably eat the egg shells. Should they not hatch, which is certainly possible, I will examine and protograph them with a better camera and post the results here.

And Mrs Ed, I am pacing too. Incidentally, you may not know but some bluebirds lay white eggs. Quite rare but it is a genetic trait, apparently passed down through certain females. But the birds that hatch from white eggs are identical in appareance to the ones hatched from blue eggs.

Dave