In your Talmud there is a story, attributed to Yishmael ben Satriel, regarding a colossal rotten egg from an even larger bird, which upon landing on the ground, flooded 60 cities with the yolk, what are the names of these cities?

In Bekhorot 57b Rabbi Yishmael ben Satriel also testified before Rabbi Yehuda HaNasi: Once an egg of the bird called bar yokhani fell, and the contents of the egg drowned sixty cities and broke three hundred cedar trees. The Gemara asks: And does the bar yokhani bird throw its eggs to the ground? But isn’t it written: “The kenaf renanim bird rejoices, but are her wings and feathers those of the stork? For she leaves her eggs on the earth, and warms them in dust” (Job 39:13–14)? The Sages understood that kenaf renanim is another name for the bar yokhani bird. If so, how could its egg fall if it lays its eggs on the ground? Rav Ashi said in explanation: That egg was unfertilized, and since it would never hatch the bird threw it to the ground. What are the names of these cities that this egg is said to have destroyed? Is this aggadah?