@article{Czechowski:2009,
author
=
"P.Czechowski and L.Jerzak and P.Zduniak and M.Bocheński",
title
=
"Is the communal roosting behaviour of the Magpie (Pica Pica) wind dependent? An example from an isolated population in W Poland",
journal
=
"Ardeola",
volume
=
"Vol. 52",
number
=
"no 2",
pages
=
"333--339",
year
=
"2005",
}