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Drone Photos Reveal a Rebounding Killer Whale

Drone Photos Reveal a Rebounding Killer Whale Community

Drone Domain Team by Drone Domain Team
June 11, 2024
in Drones For Business Use
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Thanks to a drone, researchers received good news about a beloved, yet endangered, killer whale community in the United States.

High-definition photographs of 81 endangered southern resident killer whales revealed they are fat, in good health and may be poised to welcome a few new calves to the family. The southern resident killer whale population was recently at a three-decade low, prompting concern from scientists. But these stunning photographs indicate the whales are in good shape, despite the formidable challenges they still face.

Drone Photos Reveal a Rebounding Killer Whale
Drone Photos Reveal a Rebounding Killer Whale

A Small Community

The most well-studied killer whale populations are found in the eastern North Pacific Ocean, and they are divided into three distinct forms or ecotypes: resident, transient and offshore. All three types, though similar, differ in morphology, behaviour, genetics and diet. Resident killer whales, for example, feed primarily on fish, whereas transient killer whales feed exclusively on other marine mammals.

Southern resident killer whales make up the smallest of four resident whale communities within the North Pacific Ocean, and they are the only known resident population to call the United States home. In the 1800s the southern resident killer whale population reached 200, but sits at 81 today. Southern resident killer whale declines over the past 30 years raised concern about their well-being, and they were listed as an endangered species in 2005.

Resident Watch

To keep a close eye on this small community of killer whales, a NOAA Fisheries research team collects thousands of images to assess the size and health of the southern resident population — it’s a science called photogrammetry. In 2008 and 2013, these images were taken from a helicopter hovering at 750 to 1,000 feet. This year, a hexacopter provided up-close, high-definition photographs of the whale community during 115 total flights conducted in September.

The images show whales that appear to be well fed and growing. Several females in the population also appear to be pregnant, but further analysis is needed to confirm this, according to NOAA. Photos from 2008 and 2013 painted a darker picture: several calves were lost and the whales’ overall body condition had declined.

The latest photos are encouraging signs, especially since this small whale community faces ongoing challenges. Weather forecasters are calling for a strong El Niño this year, which could lead to declines in salmon runs — southern residents’ primary food source. On top of that, these whales still face threats from manmade pollution and heavy trans-Pacific shipping traffic.

Let’s hope next year’s images show an even fatter and larger southern resident killer whale community. And on that note, enjoy one more photo of a killer whale mom nursing her calf — just to inspire a sense of optimism.

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