Leaflet
A leaflet in two languages (Romanian and Hungarian) and in four pages is illustrating the sand martin life history. You can request for it at the Milvus group address.
Video
The production of a short documentary started in summer 1999 at Mures River (Romania) and was finished a year later at Upper Tisza River in Hungary. The director and cameraman of the video was Ugron Gábor.
For those who are interested more deeply in sand martins may be helpful this reference list: Publist.rtf (22 kb)