Interesting, I was under the impression their population in Japan was decent and I thought that Wakayama and Nagoya had large enough populations for transport. The Japan comment was pure speculation going based off of the fact they’ve exported Adélies to other countries before, and they do engage in animal exchanges.
If it were a different country, my other guess is Taiwan. NMMBA has a large colony and a successful breeding program. Also interestingly enough a few years back the facility auctioned 36 of their birds; 24 gentoos, 6 chinstraps, and 6 Adélies were for sale only to organizations that were qualified to care for them. (
Penguins for sale in Taiwan | Taiwan News | Oct. 10, 2022 17:04). Obviously this isn’t confirming, but it does show that NMMBA has/had willingness to send their birds away to other countries, which could’ve included Phu Quoc.
Overall these penguins origins seem to be a mystery. There isn’t a whole lot of publicity on them and the only mentions of the animals outside of ZooChat are on Zootierliste and a few tourist review sites. Hopefully something comes up because I’m curious about these birds!