I’m carried but not heavy, I’m nailed yet feel no pain. Remove a D and I am an animal

four to start, a pretend bout, in the ring, where you are just practicing. punches light, though still delight, this session is just to train. last three go together, in a streak, as an example, for a winning sports team, as they win more than one back-to-back. add them together, a small little songbird, who’s been with humanity since the Stone Age.

I’m from the water, but not a fish. I speak, but not with words. I arc through the air, but can’t fly. I’m playful, but can have a mean streak. Not killer and bottlenose are two types of me. What am I?

I'm from the old times when we all used to be one Today we're many and keep distancing from each other What I become endure the invisible lines all over me

I am born without breath and die without a sound. I hold what I cannot keep, yet vanish when I’m held too long. I cut without a blade, shine without fire, and fall without ever rising. What am I?