looks sex link ... which means it's probably a RIR (or NHR) X with a "silver" bird... so rhode island white, white rock... etc ...
There's some good info on sexlinks here:
https://www.backyardchickens.com/forum/viewtopic.php?id=261208
There's some good info on sexlinks here:
https://www.backyardchickens.com/forum/viewtopic.php?id=261208