Drone-based photogrammetry reveals differences in humpback whale body condition and mass across North Atlantic foraging grounds by Chelsi Napoli, Nathan Hirtle, Julia Stepanuk, Fredrik Christiansen, Eleanor I. Heywood, Thomas J. Grove, Alyssa Stoller, Flordespina Dodds, Maria Glarou, Marianne H. Rasmussen, Gina L. Lonati, Kimberley T.A. Davies, Simone Videsen, Malene J. Simon, Tenna K. Boye, Ann Zoidis, Ann Zoidis, Sean K. Todd, Lesley H. Thorne, Lesley H. Thorne

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