I was curious about this issue as well. This is what i've found:
from NAT GEO
Gulls don't like bright, scary owl faces on masks or balloons (often called "terror eyes"), and some will also avoid wooden owls, kites shaped like hawks, and decoy coyotes.
Things that spin or bounce in the wind can deter birds from settling down; spiderlike mechanical devices that rotate or have bouncing "leg" wires can be effective. Spinning propellers are similarly uninviting.
Reflective material can baffle birds, so mirrored or shiny tape and streamers are an inexpensive, if short-term, solution
The jury is still out, but anecdotal evidence suggests that gulls will avoid red things.
I thought this was fkn hilarious (no evidence of efficacy)
The first drone of its class made specifically for bird control. The ProHawk™ UAV combines a sonic bird repeller [simulated bird of prey sounds, hahaha!!] with the latest autonomous flight GPS technology and design.
...Honestly, I'd try some of the easier interventions like terror eyes and red drone skin (may actually make your aircraft go faster
Overall, I didn't find any solid, consistent solutions. I've watched videos of seagulls swooping on realistic raptor models on rooftops. My suggestion would be to avoid going near flocks, you may be more successful with individual birds. I've also read that they may become more aggressive if your AGL is higher than theirs because they feel threatened..
I'd be interesting in hearing other ideas or solutions!
from NAT GEO
Gulls don't like bright, scary owl faces on masks or balloons (often called "terror eyes"), and some will also avoid wooden owls, kites shaped like hawks, and decoy coyotes.
Things that spin or bounce in the wind can deter birds from settling down; spiderlike mechanical devices that rotate or have bouncing "leg" wires can be effective. Spinning propellers are similarly uninviting.
Reflective material can baffle birds, so mirrored or shiny tape and streamers are an inexpensive, if short-term, solution
The jury is still out, but anecdotal evidence suggests that gulls will avoid red things.
I thought this was fkn hilarious (no evidence of efficacy)
The first drone of its class made specifically for bird control. The ProHawk™ UAV combines a sonic bird repeller [simulated bird of prey sounds, hahaha!!] with the latest autonomous flight GPS technology and design.
...Honestly, I'd try some of the easier interventions like terror eyes and red drone skin (may actually make your aircraft go faster

Overall, I didn't find any solid, consistent solutions. I've watched videos of seagulls swooping on realistic raptor models on rooftops. My suggestion would be to avoid going near flocks, you may be more successful with individual birds. I've also read that they may become more aggressive if your AGL is higher than theirs because they feel threatened..
I'd be interesting in hearing other ideas or solutions!