Bats' Conquest of a Formidable Foraging Niche: The Myriads of Nocturnally Migrating Songbirds Popa-Lisseanu, Ana G. ; Delgado-Huertas, Antonio ; Forero, Manuela G. ; Rodríguez, Alicia ; Arlettaz, Raphaël ; Ibáñez, Carlos Abstract Publication: PLoS ONE Pub Date: February 2007 DOI: 10.1371/journal.pone.0000205 Bibcode: 2007PLoSO...2..205P