Fruit Bats (band) Bats had begun to evolve into a band with the inclusion of I Rowboat members Dan Strack and Brian Belval and in 2001, their debut record Echolocation was released on Califone's imprint, Perishable Records. Tours followed with the likes of Modest Mouse and The Shins. Fruit Bats signed with Sub Pop in 2002 and have released four albums with the label including "Mouthfuls" in 2003, "Spelled in Bones" in 2005, "The Ruminant Band" in 2009 and "Tripper" in 2011. Johnson also joined The Shins in 2009. Their song "Humbug Mountain Song" spurred new fan activity. In an interview with "Reverb
Animal echolocation as 212 kHz. Insectivorous aerial-hawking bats have a call frequency between 20 kHz and 60 kHz because it is the frequency that gives the best range and image acuity and makes them less conspicuous to insects. However, low frequencies are adaptive for some species with different prey and environments. "Euderma maculatum", a species that feeds on moths, uses a particularly low frequency of 12.7 kHz that cannot be heard by moths. Echolocation calls can be composed of two different types of frequency structure: frequency modulated (FM) sweeps, and constant frequency (CF) tones. A particular call can consist of one, the