Identificaciones de cornishgamehen

This robin was found already weakened on the ground in the snow. Possibly weak after the snowstorm we've just had. Friend's dad was able to pick it up to see if it would fly off, but unfortunately their dog got to it afterwards by the tail and ended up plucking quite a few tail feathers off, but had no other obvious injuries or bleeding from the incident. It was then brought inside in a box to see if it would recover but unfortunately did not make it. Not sure if it was already dying or if the incident with the dog was too stressful. It felt pretty skinny, no obvious fat deposit.