Seagulls are typically very aggressive and the worst birds to fly near - you were very lucky. I flew near Red Kites earlier in the week which are about three times the size of seagulls and they just flew away from the drone. Even the most on-point preflight check and firmware update can't stop an unexpected strike by a gull.
Hello there pbrowntv. Thank you for reaching out and for sharing this interesting video with us. That was close. Just a reminder that birds are part of our natural environment and I'm sure they're not familiar to the drones that is why they react aggressively when they notice it. Thank you and please fly safe always.