Great pics GF, he looks very lean in that last pic. More mature. Nikki was watching the birds yesterday on our walk too, then took a flying leap at them. Unfortunatley he was in harness on a leash - he didn't get far before he crashed back to earth!
Funny how dogs are about always wanting the toy the others have. Halo was like that, all the toys were hers. Now they all belong to the puppies. Hard to say who though, they generally both have hold of one toy.
How old are they when they start teething? Are you saying the chewing gets worse?? We're lucky these two mostly just chew each other.