Play NYT Connections Puzzle #630 Sun, Feb 2

Find groups of four related words Need hints?

Solve NYT Connections puzzle #630 - Group 16 words into 4 categories: BLUE, DOWN, HANGDOG, SORRY, DUCK, GROUSE, HAWK, SWALLOW, GRIFFIN, MUNSTER, PARTRIDGE, PICKLES, MART, POP, STREET, SWISS.