- Albania
- Szederjesi and Csuzdi, 2012b
- Belgium
- Muys, 2013
- Bulgaria
- Zicsi and Csuzdi, 1986b
- Denmark
- Blakemore, 2007.
- France
- Bouche, 1972.
- Greece
- Szederjesi and Csuzdi, 2012
- Madeira
- Talavera, 1996
- Morocco
- Omodeo et al., 2003
- Poland
- Kasprzak, 1989
- Portugal
- Trigo et al., 1988, 1989
- Romania
- Pop, 2012.
- Russia
- Perel, 1979; Perel-Vsevolodova, 1997; Blakemore, 2007c
- Spain
- Diaz Cosin et al., 1992; Monroy et al., 2003
- Sweden
- Blakemore, 2007.
- United Kingdom
- Sims and Gerard, 1999; Blakemore, 2008
- United States
- Alaska: Reynolds, 1995; Bowser et al., 2013; Oregon: Reynolds, 1995; Tennessee: Reynolds, 1995; Washington: Reynolds, 1995
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Data are not exhaustive. The database is permanently a work in progress.