"We were rather certain that a bird strike had knocked it out of the sky," Calvert said. "There were gulls in the air in close enough proximity. Those things don't drop out of the sky."
Calvert acknowledged that the drones were in the gull's territory. "I get that," he said. "It makes total sense. It's their habitat. I totally get that."
It's the first "bird strike" in the four years the drone program has been running, he said. "It was a remarkable event for us," he added.
The drone was ultimately found lying in the mud, but with no evidence of damage from an attack by a bird, Calvert said. Its camera footage did not reveal anything, probably because the camera was pointed toward the ground at the time, he surmised.
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