Target practice?

Ten eight green brown bottles sitting on the wall! I've passed them by quite a few times, curious as to their purpose. Target practice? Guess I'll never know. Anyway, it makes a blip for silly Saturday:)
Collected a little parcel today from the parcel office this morning, warm, sunny and blue sky, a beautiful day.
And watched 'On the Waterfront' this afternoon, a film I have never seen. Thoroughly enjoyed it:)