@article{Czechowski:2013,
author
=
"P.Czechowski and M.Bocheński and O.Ciebiera",
title
=
"Decline of Jackdaws Corvus monedula in the city of Zielona Góra",
journal
=
"International Studies of Sparrows",
volume
=
"Vol. 37",
pages
=
"32--36",
year
=
"2013",
}