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Related Experiment Video

Updated: Jun 21, 2025

A Video Surveillance System to Monitor Breeding Colonies of Common Terns Sterna Hirundo

A Video Surveillance System to Monitor Breeding Colonies of Common Terns Sterna Hirundo

Published on: July 22, 2018

Oceanic seabirds chase tropical cyclones.

Francesco Ventura¹, Neele Sander², Paulo Catry³

¹Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA.

Current Biology : CB

|July 10, 2024

Summary

Tropical cyclones surprisingly benefit Desertas petrels by providing favorable winds and increased prey availability in their wakes, aiding foraging and potentially boosting populations of pelagic seabirds.

Keywords:

Pterodroma cyclone dynamic soaring extreme weather flight behavior foraging ecology hurricane seabird storm wind

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Area of Science:

Marine Biology
Ecology
Oceanography

Background:

Tropical cyclones significantly impact marine ecosystems, with known effects on coastal zones and pelagic production, but impacts on open ocean wildlife are less understood.
Desertas petrels (Pterodroma deserta), wide-ranging predators, inhabit mid-latitude North Atlantic regions prone to hurricanes.

Purpose of the Study:

To investigate the effects of tropical cyclones on the foraging movements of Desertas petrels.
To understand how these seabirds interact with cyclones and their associated environmental changes.

Main Methods:

Tracking the movements of Desertas petrels during hurricane season.
Analyzing bird responses to cyclone proximity, including course alteration and speed.
Examining sea surface temperature and chlorophyll concentrations in cyclone wakes.

Main Results:

Desertas petrels did not avoid cyclones or seek refuge in the eye; approximately one-third interacted with them.
Birds reduced flight speed upon encountering strong winds and a quarter followed cyclone wakes for extended periods.
Cyclone wakes exhibited decreased sea surface temperature and increased chlorophyll, indicating enhanced primary production and potential prey availability.

Conclusions:

Cyclone wakes offer favorable tailwinds and increased foraging opportunities for Desertas petrels.
These findings suggest that tropical cyclones may have positive net effects on the demography of mid-latitude pelagic seabirds and other marine top predators.