Nice clean image and composition - head and wing position are great and overcome blown-out tail, and hint of waterfowl in the background give a nice context.
Nice placement of the seagull coming into the frame. The wings form a nice diagonal. Some interest in the background with the geese but not overbearing because of the bg blur. Biggest hit you're going to take is for losing detail in the tail with the blownout whites. Good luck in the challenge.