From Murdoch University:
An animal’s body condition will affect its survival and reproductive success, which in turn influences population dynamics. Despite its importance, relatively little is known about the body condition of large whales and its relationship to reproduction. We assessed the body condition of humpback whales (Megaptera novaeangliae) at a breeding/resting ground (Exmouth, Figure 1) from aerial photographs recorded using an non-invasive unmanned aerial vehicle (UAV). Photogrammetry methods were used to measure the surface area of individual whales, which was used as an index for body condition.
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