All I can find online for "Blue Tint Wyandotte" seems to refer to what is actually called "Blue Laced Wyandotte", and I can say with certainty that is not what the chicken in your picture is :)
My guess is there was a mix-up, maybe someone put the wrong chicken back in that bin? Once she starts...
Could be cream legbar, could be a cross. There are also other breeds like Icelandics that have crests, but those usually aren't sold in retail type places. Where did you buy your birds?
https://www.veterinariadigital.com/en/articulos/blood-in-the-chicken-egg-why-does-it-appear/#:~:text=Deficiency%20of%20vitamins%20A%20and,blood%20in%20the%20chicken%20egg.
Deficiency of vitamins A and K: Modern diets supplied to laying hens ensure a good nutrition. However, Vitamin A or...
I have a small flock of Shetland hens, they do have some fertility issues. So far this spring I'm seeing about 20% hatch rate from my flock's eggs. I plan to get numbers up as much as possible this season and then switch to the clan mating system to see if I can improve fertility.
Crossbreeding...