These are real taxidermied Long-Tongued Nectar Bats (Macroglossus minimus)! They have been mounted to in shadowboxes for easy display. These megabats are indigenous to numerous areas including Indonesia, Malaysia, and New Guinea.
They are sustainably hunted by the indigenous peoples as a source of food and income. These bats have been studied and rated a level of "Least Concern" on the IUCN index of endangered/at-risk species due to their stable population and widespread distribution.
These frames measure ~11" wide and are available worldwide!