The CSF has been behaviorally estimated for at least two insects (Chakravarthi, Baird, Dacke, & Kelber,
2016; Srinivasan & Lehrer,
1988), seven birds (Harmening, Nikolay, Orlowski, & Wagner,
2009; Hirsch,
1982; Hodos, Ghim, Potocki, Fields, & Storm,
2002; Jarvis, Abeyesinghe, McMahon, & Wathes,
2009; Lind & Kelber,
2011; Lind, Sunesson, Mitkus, & Kelber,
2012; Reymond & Wolfe,
1981), and 13 mammals (Birch & Jacobs,
1979; Bisti & Maffei,
1974; De Valois, Morgan, & Snodderly,
1974; Hanke, Scholtyssek, Hanke, & Dehnhardt,
2011; Jacobs,
1977; Jacobs, Birch, & Blakeslee,
1982; Jacobs, Blakeslee, McCourt, & Tootell,
1980; Langston, Casagrande, & Fox,
1986; Merigan,
1976; Petry, Fox, & Casagrande,
1984). Data on fish are limited to two free-swimming, freshwater species (i.e., goldfish and bluegill sunfish; Bilotta & Powers,
1991; Northmore & Dvorak,
1979; Northmore, Oh, & Celenza,
2007). Although marine fish are a common subject of visual ecology studies, according to our knowledge a CSF has not been determined for any of them.