234
Prehistoric bird once thought extinct returns to New Zealand wild
(www.theguardian.com)
So few of these birds remained that their genetic diversity is a problem for reproducing the species 😕.
“inbreeding depression is a significant problem.[29] The recovery efforts are hampered especially by low fertility of the remaining birds. Genetic analyses have been employed to select captive breeding stock in an effort to preserve the maximum genetic diversity.”
This is a problem with cheetahs as well, where it's theorized that only a small group survived the last ice age, and survived thru inbreeding. Because of this, they are essentially genetic "clones" of one another with almost zero genetic variability, and they have about a 50% chance to successfully receive transplants without the need for the medication typically required to prevent rejection. Source
Do cheetahs seem pretty healthy overall as a species even with low diversity?
They are prone to health problems, particularly those bred in captivity. Cheetahs born in captivity are prone to a disease similar to mad cow disease, which is believed to be transmissible and kills around 70% of the Cheetahs in captivity. It's sad, but also pretty interesting. Source
That is a very round bird.
This is the best summary I could come up with:
Eighteen of the birds were released in the Lake Whakatipu Waimāori valley, an alpine area of New Zealand’s South Island last week, on to slopes they had not been seen roaming for about 100 years.
“Very broad and bold.” Front-on, their bodies can appear almost perfectly spherical – coupled with the blue-green plumage, they look like a model planet Earth perched atop two long, bright red legs.
The birds had been formally declared extinct in 1898, their already-reduced population devastated by the arrival of European settlers’ animal companions: stoats, cats, ferrets and rats.
As trapping efforts have expanded, rare species are being re-introduced outside sanctuary fences: last year kiwi, the national birds, were reintroduced to wild spaces on the outskirts of the city for the first time in generations.
The release on Ngāi Tahu land is an attempt to establish the country’s third wild takahē population – and close collaboration between the government and the Indigenous tribe who will host them.
O’Regan’s father was a keen conservationist, and after a South Island doctor spotted the birds in the Murchison mountains, he attended the second expedition to find them in 1949 – with his young son in tow.
The original article contains 901 words, the summary contains 197 words. Saved 78%. I'm a bot and I'm open source!
Why is it round?
Evolved to be more easily used as a software logo.
that roundness is from the stuff that made it so tasty. the original butterball.
I... should shut up now. before we do that thing, again.
(edit to clarify: Don't eat them. This is great. Let them be. let them thrive. BUTTER BALLS ARE NOT FOOD.)(it helps if I keep telling myself that.)
Was it on a vacation, that it returned all of a sudden ?
It was hunted to near extinction by introduced predators and considered extinct for several decades until a handful of survivors were located in some very remote areas.
When the survivors were found, the department of conservation moved them into a breeding program on some offshore islands where they would be free from predators. Since then the population has slowly grown and predator eradication programs on the mainland have had enough success that we're now taking a calculated risk on moving some of them back to their original habitat.
Thanks for the added context.
That username, though...
So we were aware they weren't completely extinct since we were keeping a few around? The title makes it seem like it just popped up and was a complete surprise.
I'm sure when they were rediscovered, it was a complete surprise.
“South Island takahē were dramatically rediscovered in 1948 by Geoffrey Orbell in an isolated valley in the South Island's Murchison Mountains”
Once thought extinct.
Before some were found, they were thought to be extinct.
This happens more often than you would expect. Many animals have been declared extinct for a long time only to return. It happened with ivory billed woodpeckers in the US
this post was submitted on 29 Aug 2023
234 points (99.2% liked)
World News
39099 readers
1486 users here now
A community for discussing events around the World
Rules:
-
Rule 1: posts have the following requirements:
- Post news articles only
- Video links are NOT articles and will be removed.
- Title must match the article headline
- Not United States Internal News
- Recent (Past 30 Days)
- Screenshots/links to other social media sites (Twitter/X/Facebook/Youtube/reddit, etc.) are explicitly forbidden, as are link shorteners.
-
Rule 2: Do not copy the entire article into your post. The key points in 1-2 paragraphs is allowed (even encouraged!), but large segments of articles posted in the body will result in the post being removed. If you have to stop and think "Is this fair use?", it probably isn't. Archive links, especially the ones created on link submission, are absolutely allowed but those that avoid paywalls are not.
-
Rule 3: Opinions articles, or Articles based on misinformation/propaganda may be removed. Sources that have a Low or Very Low factual reporting rating or MBFC Credibility Rating may be removed.
-
Rule 4: Posts or comments that are homophobic, transphobic, racist, sexist, anti-religious, or ableist will be removed. “Ironic” prejudice is just prejudiced.
-
Posts and comments must abide by the lemmy.world terms of service UPDATED AS OF 10/19
-
Rule 5: Keep it civil. It's OK to say the subject of an article is behaving like a (pejorative, pejorative). It's NOT OK to say another USER is (pejorative). Strong language is fine, just not directed at other members. Engage in good-faith and with respect! This includes accusing another user of being a bot or paid actor. Trolling is uncivil and is grounds for removal and/or a community ban.
Similarly, if you see posts along these lines, do not engage. Report them, block them, and live a happier life than they do. We see too many slapfights that boil down to "Mom! He's bugging me!" and "I'm not touching you!" Going forward, slapfights will result in removed comments and temp bans to cool off.
-
Rule 6: Memes, spam, other low effort posting, reposts, misinformation, advocating violence, off-topic, trolling, offensive, regarding the moderators or meta in content may be removed at any time.
-
Rule 7: We didn't USED to need a rule about how many posts one could make in a day, then someone posted NINETEEN articles in a single day. Not comments, FULL ARTICLES. If you're posting more than say, 10 or so, consider going outside and touching grass. We reserve the right to limit over-posting so a single user does not dominate the front page.
We ask that the users report any comment or post that violate the rules, to use critical thinking when reading, posting or commenting. Users that post off-topic spam, advocate violence, have multiple comments or posts removed, weaponize reports or violate the code of conduct will be banned.
All posts and comments will be reviewed on a case-by-case basis. This means that some content that violates the rules may be allowed, while other content that does not violate the rules may be removed. The moderators retain the right to remove any content and ban users.
Lemmy World Partners
News !news@lemmy.world
Politics !politics@lemmy.world
World Politics !globalpolitics@lemmy.world
Recommendations
For Firefox users, there is media bias / propaganda / fact check plugin.
https://addons.mozilla.org/en-US/firefox/addon/media-bias-fact-check/
- Consider including the article’s mediabiasfactcheck.com/ link
founded 1 year ago
MODERATORS