Striped Blue Crow (Euploea mulciber barsine)
Late March through to late April can be a really magical time of the year for nature lovers visiting the Huben-Hushan area. From late March through to about the tenth of April great numbers of Purple Crow (Euploea) Butterflies pass through the Huben area on their spectacular journey from southern Taiwan to northern Taiwan. This butterfly migration is amongst the world's most spectacular butterfly migrations. Indeed, Taiwan is often referred to as the Island of Butterflies. With around four hundred butterfly species found on Taiwan, Taiwan is a paradise for butterfly watchers.
Literally, coinciding with the Purple Crow/Milkweed Butterfly migration through central Taiwan is one of the world's most spectacular raptor migrations. The Grey-faced Buzzard is also moving through the area in their thousands (A Brief History of Grey-Faced Buzzard Conservation in Taiwan). This continues until about 7th April and then it's just about a two week wait until the Fairy Pitta return to the Huben-Hushan area.
Photo by Mark Wilkie; more butterfly photos can be found at Stop Hushan Dam!