orange, not yellow. Usually only one black abdominal stripe is visible. The others are seen when she pulsates her body.
Only the queen yellow jackets overwinter. Come spring she builds a small nest, rears the young, then that brood takes over building and rearing the colony for the rest of the summer. This queen has even been known to crawl into the nests of other yellow jackets, steal their eggs or larvae, and raise them as her own.