This review is based off of my 5 Wyandottes compared to other breeds that I have had more than one of (Barnevelders, Marans, Orpingtons, Hybrids, RIRs, & Bielefelders). There does seem to be some variance amongst color varieties. My silver & gold laced birds are most similiar in personality. My blue laced red had some commonalities with them, but my lavender has NOTHING in common with the other 4.
My wyandottes are spunky birds who are always around seeing what you're up to. They are personable, inquisitive, and enjoy being around people. However, they are harder to touch/handle than other breeds.
The hens are LOUD when they are displeased with something (another hen in the nest box or getting fed nonpreffered treats). They make a distinct sound that is different from other breeds I've had. Even the mix-breed offspring of my SLWs make this noise. I find it amusing, but in a residential setting it might be problematic. Interestingly, there egg song is not that loud. It's mostly just when they're complaining.
They are a dominate breed and don't back down in a fight. They can be bullies and are less tolerant of submissive or easily victimized birds (young birds, birds in recovery, molting, etc...). They are a good flock fit if you don't have any particularly "needy" birds in your flock. They also really keep young cockerels in line. They do not put up with hormone driven antics and will defend the other hens from these cockerels. In these situations I find the wyandotte hens to be more protective of the flock than the mature roosters.
My Wynadottes have not had health problems compared to my other breeds. I also believe they are more intelligent than my other breeds. They are intuitive and seem to figure things out that the other birds can't. They are resilient and adaptable birds. Their personalities are so strong that I see it come through in mixed breed birds that are only 1/2 and 1/4 wyandotte.
Lastly, I find the eggs of wyandotte (and mixes) to have the richest yolks. I don't know if this is a breed thing or an indication that they're better foragers, but their yolks are delicous.
*MY BLRW was less personable than the Silver & Gold. She was only loud when singing her egg song. She was such a bully that she is no longer with us. My lavender wyandotte I'm pretty sure is just a lavendar orpington with a shaved down comb, lol. She's 100% different from the laced varieties.*