I got this picture of Logan in his "cave" over the weekend. I haven't actually weighed him, but I think he's about the size Finn was (Finn weighed 62 pounds). Logan is only 7 months old though so he's not done growing. I'm not sure whether you can see how much bigger he is in the new picture above, versus his last "cave" picture, below, but he's gotten longer in the body. His beak is also longer now and more dog-like than it was.
According to the dates on the photos, they were taken about 3 weeks apart. I'll keep taking pictures of him in the cave as he grows since it gives a frame of reference on his size. Of course it would be easier if he would lie in the same position every time, but that's not going to happen.