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Spectral bat
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===Diet=== [[File:Crotophaga sulcirostris.jpg|thumb|upright|A [[groove-billed ani]], one of the spectral bat's primary food sources]] The spectral bat is exclusively [[carnivore|carnivorous]],<ref>{{Cite journal| doi = 10.3161/1733-5329(2005)7[131:TGSOAL]2.0.CO;2| volume = 7| issue = 1| page=136| last1 = Giannini| first1 = Norberto P.| last2 = Kalko| first2 = Elisabeth K. V.| title = The guild structure of animalivorous leaf-nosed bats of Barro Colorado Island, Panama, revisited| journal = Acta Chiropterologica| date = 2005| s2cid = 85309649}}</ref> consuming [[bird]]s, [[rodent]]s, and other species of [[bat]]. Additionally, it consumes some [[insect]]s such as [[Coleoptera|beetles]].<ref name="Bonato 2004"/> It preys on other bats opportunistically, and it is known to eat bats out of researchers' [[mist net]]s. Prey species include the [[highland yellow-shouldered bat]], [[Geoffroy's tailless bat]], [[Pallas's long-tongued bat]], [[Carollia|short-tailed fruit bats]], the [[common vampire bat]], and [[Artibeus|fruit-eating bats]].<ref name="Peterson 1969">{{cite journal|doi=10.1139/z69-025|title=Notes on Vampyrum spectrum, the false vampire bat, in Panama|journal=Canadian Journal of Zoology|volume=47|pages=140–142|year=1969|last1=Peterson|first1=R. L|last2=Kirmse|first2=Peter}}</ref> It was once thought to supplement its diet with fruit, but a captive pair refused to eat any fruit over a 5-year period.<ref name="Greenhall 1968"/> Its diet can be studied passively because it carries prey items back to its roost to consume, discarding unwanted parts such as bird feathers, bat wings, and rodent tails. Over the course of a year, 18 bird species were identified from feathers left under a roost in Costa Rica: based on the assemblage, it prefers non-[[passerine|perching]] bird species that weigh {{cvt|20-150|g|oz}}.<ref name="Vehrencamp 1977"/> However, a later study in Brazil determined that perching bird species were a majority of prey items.<ref name="Bonato 2004">{{cite journal|doi=10.1644/BWG-121|title=Food Habits of Bats of Subfamily Vampyrinae in Brazil|journal=Journal of Mammalogy|volume=85|issue=4|pages=708|year=2004|last1=Bonato|first1=Vinícius|last2=Gomes Facure|first2=Kátia|last3=Uieda|first3=Wilson|doi-access=free}}</ref> [[Columbidae|Doves]] and [[cuckoo]]s are frequently consumed—they represented over half the prey items documented in the Costa Rican study. Some prey species such as cuckoos, [[trogon]]s, and [[motmot]]s are known to have a strong odor, leading Vehrencamp et al. to hypothesize that spectral bats may rely on scent to locate prey. It also prefers prey that roost in groups, which may aid in detection. The [[groove-billed ani]], which both has a strong smell and roosts in groups, is a particularly common prey item, representing approximately 24-26 of the 86 prey items identified in the study. Other species identified included the [[Eupsittula canicularis|orange-fronted parakeet]], [[orange-chinned parakeet]], [[rufous-naped wren]], [[streak-backed oriole]], and [[scissor-tailed flycatcher]]. The largest prey species identified was the [[white-tipped dove]], which at {{cvt|150|g|oz}}, weighs almost as much as spectral bats. Because its prey items can be so large, it may only need to consume one bird every two or three nights to meet its caloric requirements. <ref name="Vehrencamp 1977">{{cite journal|doi=10.2307/1379995|jstor=1379995|title=Observations on the Foraging Behavior and Avian Prey of the Neotropical Carnivorous Bat, ''Vampyrum spectrum''|journal=Journal of Mammalogy|volume=58|issue=4|pages=469|year=1977|last1=Vehrencamp|first1=S. L|last2=Stiles|first2=F. G|last3=Bradbury|first3=J. W|url=https://zenodo.org/record/8205064}}</ref>
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