As noted in the article, the headline is misleading. The population obviously hasn't quadrupled since Yosemite closed to visitors on March 20th. It is remarkable though to see how quickly wildlife is willing to re-enter areas that have historically been overrun with humans!
If you say that the population of a city has doubled, it mostly means that people moved there, not that they were born there. The headline is fine. All: Obviously the bears weren't born in the last month. Please assume basic intelligence in your fellow readers. Edit: Ok you guys, I surrender. There is no fighting the dreaded title fever. https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu... .
After a few seconds of thinking about it, it’s obvious that 4x the bears were not born there, but it’s just interesting enough to get a click, to find out what the headline really means, and therefore is a type of clickbait.