They're beautiful! And you have one named Mushroom! That's awesome, because I have a Polish hen named Mushroom Cloud! My other Polish hen is Dandelion, the roo is Spike, and their chick (about a year old now) is Chiclet.
My other half bought them for me a few years ago at a livestock auction in south Georgia. He remembered hearing me talking about wanting Polish chickens but he didn't know what they were (he just knew from me that they had fluffy crests) so he asked around until he found some. I got them for Valentine's Day. No diamonds, no chocolate, no flowers, just 2 hens, a rooster and a copy of the USDA poultry calendar (all about bird flu, how romantic!).