He's indeed a he! Yours are bred more of a European standard and I have Black English Orpingtons myself. My three have been quite lazy also! They're putting on weight well and eating/drinking fine, they just like their breaks. I think it's a combination of the dense feathers and hefty build that makes them on the lazy side when compared to the typical Orpington here in the US. I personally wouldn't worry because she sounds like mine! They're beautiful by the way!