I'm sorry to hear you lost one.
I would just keep watch on the rest, if all are acting normal, then enjoy them. If it is Ocular form of Marek's, chicks should soon be having difficulty seeing since this form causes partial or total blindness in one or both eyes.
I'm still thinking their eye color will change as they get older, it would be interesting to know, so if you don't mind, please keep us posted.
I would just keep watch on the rest, if all are acting normal, then enjoy them. If it is Ocular form of Marek's, chicks should soon be having difficulty seeing since this form causes partial or total blindness in one or both eyes.
I'm still thinking their eye color will change as they get older, it would be interesting to know, so if you don't mind, please keep us posted.