@article{Antczak:2012,
author
=
"M.Antczak and M.Hromada and P.Tryjanowski",
title
=
"Sex differences in impaling behaviour of Great Grey Shrike Lanius excubitor: Do males have better impaling skills than females?",
journal
=
"Behavioural Processes",
volume
=
"Vol. 91",
number
=
"no. 1",
pages
=
"50--53",
year
=
"2012",
}