Read about traveling in Taiwan in Travel in Taiwan. Free online PDF version at http://www.tit.com.tw. Also, visit the Travel in Taiwan fan page on Facebook http://www.facebook.com/taiwantravelmag for all sorts of things related to Taiwan travel. Travel in Taiwan is also available as a free app for iOS (iPhone/iPad) and Android devices. On a mobile device, just go to http://tit.com.tw/appdownload.htm to get to the download page for both systems. The phone version is a work in progress. Apologies for any bad user experience.
the first time I saw those I was in Guam. It was at a cave by a secluded beach. I asked the Wildlife Refuge people there and she said she hadn't seem them before and had only began seeing them a few years ago. I went online and searched, and apparently it's a kind of soapberry bug, called Leptocoris augur (紅姬緣椿象). Leptocoris vicinus also looks very similar, but with a black rare.
In Taiwan they are a main stable of birds. They don't attack or cause diseases. They like to swarm tree saps. They are indigenous to Taiwan. Don't know if they got introduced to Guam recently...
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