APR 17, 2019 08:52 AM PDT

First Tagged Yellowstone Golden Eagle Succumbs to Lead Poisoning

WRITTEN BY: Anthony Bouchard

Animal conservationists frequently attach GPS tracking tags to animals to better understand their lifestyles and movement patterns, and Yellowstone National Park’s prestigious golden eagle (Aquila chrysaetos) was no exception to that. Unfortunately, it wasn’t long after tagging a few of the birds that something went terribly wrong…

A Yellowstone golden eagle that was tagged in 2019.

Image Credit: National Park Service via The Guardian

As it would seem, the very first of a small number of Yellowstone’s golden eagles to be tagged has unexpectedly died from lead poisoning after leaving the park’s protected boundaries and ingesting lead ammunition fragments left behind in the carcass of a hunter’s game. The findings came to light after researchers performed a necropsy on the deceased bird.

“This bird had a substantial amount of lead put into its system in a very quick way,” U.S. Geological Survey biologist Todd Katzner told The Guardian in a statement. “You don’t get that from breathing lead. It ingested something.”

Related: The introduction of wolves to Yellowstone National Park yielded a positive impact, study shows

Perhaps unsurprisingly, the circumstances have raised a bevy of previously-expressed concerns regarding the safety of protected parks for the animals that inhabit them and the use of lead-based ammunition for hunting rather than safer alternatives like that of copper-based ammunition.

Unlike people, who define protected parks’ boundaries and determine where hunting is legal and where it’s not, Yellowstone’s golden eagle doesn’t know where the said areas start and end. It’s not uncommon for the birds to leave the park in search of food before returning home, and so it can be inferred that even the park’s surroundings pose a threat to its wildlife.

“We know that lead poisoning is a substantial threat to scavenging birds of prey globally,” Katzner added. “And we now know the threat is extended to birds that are in protected areas such as Yellowstone.”

Related: What's the deal with Yellowstone's supervolcano?

Lead-based ammunition is popular among hunters because it’s cheaper than copper-based alternatives. On the other hand, it’s not as environmentally-friendly as the latter. Environmentally-conscious hunters will sometimes bury gut piles that have been exposed to lead ammunition in an effort to prevent birds such as the golden eagle from eating it, but as shown in this case, not all hunters partake in this practice.

Yellowstone’s golden eagle isn’t in any imminent danger of extinction, but conservationists are keeping a firm eye on the species to learn why Northern park populations are reproducing more effectively than Southern park populations. The GPS tracking devices were one of the first steps taken in the effort to study the species.

Conservationists attached the tracking device to the first (now deceased) golden eagle back in August 2018 and followed up at the start of 2019 by tagging five more specimens. Although the first bird is no longer flying around and providing a live GPS data feed, the scientists managed to capture a moderate dataset chunk from the specimen over the last eight months.

It remains to be seen how the lead-based ammunition situation will be handled, but it certainly is unfortunate that the park’s very first GPS-tagged golden eagle had to die this way. What are the odds?

Source: The Guardian

About the Author
  • Fascinated by scientific discoveries and media, Anthony found his way here at LabRoots, where he would be able to dabble in the two. Anthony is a technology junkie that has vast experience in computer systems and automobile mechanics, as opposite as those sound.
You May Also Like
DEC 09, 2019
Plants & Animals
DEC 09, 2019
South Atlantic Humpback Whale Population Nears Pre-Whaling Numbers
It’s no secret that whaling is frowned upon both by conservationists and the law, but there was once a time in the not-so-distant past when commercia...
DEC 09, 2019
Drug Discovery & Development
DEC 09, 2019
Developing Animal-Free Neurotoxin Testing
The need to assess a group of deadly neurotoxins without turning to animal-testing may soon be a possibility. A new animal-free testing technique was recen...
DEC 09, 2019
Earth & The Environment
DEC 09, 2019
11,000 Scientists Agree-The Climate Crisis is Here
A worldwide coalition of more than 11,000 scientists from 153 countries warns "clearly and unequivocally that planet Earth is facing a climate emergen...
DEC 09, 2019
Plants & Animals
DEC 09, 2019
How a Rattlesnake's 'Rattle' Works
Rattlesnakes are one of the most discernible snakes in the animal kingdom, not only because of their appearance, but also because of how they shake their t...
DEC 09, 2019
Earth & The Environment
DEC 09, 2019
Restoring the World's Wetlands
An effort to restore wetlands throughout the United States and the United Kingdom is currently underway. As part of the Associated Press’ “What...
DEC 09, 2019
Plants & Animals
DEC 09, 2019
A Hamster's Stuffable Cheeks Can be Convenient, But Not in This Case
Hamsters are just one of several rodents that can stuff their mouths full of food and other goodies and carry it long distances to deposit somewhere else,...
Loading Comments...