### Identification Blasius’s Horseshoe Bat is a medium-sized chiropteran with a soft, woolly pelt and a striking "two-tone" appearance. Look for the distinct contrast between its pale, almost creamy-white belly and its greyish-brown back. To tell it apart from the similar Mediterranean Horseshoe Bat (*R. euryale*), look closely at the sella—the central, protruding part of the complex nose-leaf. In *R. blasii*, the upper process of the sella is sharply pointed and wedge-shaped when viewed from the side, and the lancet (the top "spike" of the nose-leaf) tapers abruptly. Its ears are large, translucent, and lack a tragus, a classic trait of the Rhinolophidae family.
### Habitat & Range This species is a specialist of karst (limestone) landscapes. Its range is vast but fragmented, stretching from the Mediterranean Balkans and Turkey through the Middle East and down into Eastern and Southern Africa. It favors Mediterranean-style scrubland, maquis, and open oak woodlands. For roosting, it is strictly cavernicolous, requiring warm, humid caves or abandoned mines for both summer nurseries and winter hibernation.
### Behaviour In the field, you’ll notice *R. blasii* has a highly maneuverable, butterfly-like flight pattern. It is capable of hovering briefly to inspect foliage. Unlike many bats that huddle in tight masses, Blasius’s Horseshoe Bats often roost in loose clusters, hanging freely from the cave ceiling by their toes, completely enveloped in their own wings like tiny, dark umbrellas. They are late emergers, typically waiting for full darkness before venturing out to hunt.
### Diet These bats are moth specialists. They use high-frequency echolocation (peaking around 93–98 kHz) to detect the fluttering wings of prey against cluttered backgrounds. They utilize two main hunting strategies: "hawking" (catching insects in mid-flight) and "gleaning" (plucking stationary insects or spiders directly from leaves and branches).
### Fascinating Fact The horseshoe-shaped nose-leaf isn't just a bizarre ornament; it acts as a biological megaphone. While most bats broadcast sonar through their mouths, *R. blasii* emits sound through its nostrils. The nose-leaf focuses these pulses into a narrow, steerable beam, allowing the bat to "scan" its environment with surgical precision without even moving its head.