Tropical cyclones are synonymous with destruction. But at least one seabird may take advantage of them as feeding opportunities.
The Desertas petrel, a small and threatened seabird native to the North Atlantic Ocean, has long been associated with oncoming storms. A new study suggests that this skilled flier purposely interacts with cyclones, flying long distances toward them and following their wake, researchers report in the July 22 Current Biology.
It’s a risky gambit by the petrel (Pterodroma deserta), which must contend with wind speeds approaching 90 kilometers per hour and swells up to eight meters high. The likely payoff: an abundance of food. The team found markedly higher levels of chlorophyll in the stirred-up, cooler water of the storms’ wakes, suggesting elevated levels of phytoplankton. This could trigger a feeding event that draws the petrels’ prey—fish and cephalopods—to the surface.