1.    Black vultures in Evros. Feeding and food supply. Craignish Conservation Trust (1985).

2.    Designation of Kerkini wetland (1984) (Convention Ramsar).

3.    Ecological study of lake Kerkini (1990).

4.    Protection and management of the Phesant (Phasianus colchicus colchicus) in Delta of Nestos. (1987).

5.    Ecology and management of raptors in Dadia forest (1989).

6.    Papageorgiou, N., C. Vlachos, D. Bakaloudis, A. Kazaklis, P. Birtsas, E. Skarpos. (1994). Study of Biology and Management of Birds of Prey in the Dadia forest. A.U.Th. Thessaloniki.

7.    (2000-2003) External collaborator. Ecology and Management of Bonelli’s eagle (Hieraaetus fasciatus) in Cyprus. Research Promotion Foundation, Lefkosia, Cyprus. Project Leader: S. Iezekiel.

8.    (2000-2003) External collaborator. Conservation of Griffon Vulture Gyps fulvus in Cyprus. United Nations-Office for Project Services (UNOPS), Lefkosia, Cyprus. Project Leader: A. Christodoulou.

9.    (2003-2006) The predation of red fox (Vulpes vulpes) and stone marten (Martes foina) in the wild fauna, in Central Greece. Research Committee of the Aristotle University of Thessaloniki. Project Leader: C.Vlachos.

10.  (2005-2007) External collaborator. The Ecology and Management of Longılegged Buzzard (Buteo rufinus) in Cyprus. Research Promotion Foundation, Lefkosia, Cyprus. Project Leader: S. Iezekiel.

11. (2005-present) The migratory phenology of wildfowl in Greece. LKN-Analysis & Research Committee of the Aristotle University of Thessaloniki. Project Leader: C. Vlachos.   

12. (2009-present) External collaborator. Ecology and Management of the Cyprus Wheatear (Oenanthe cypriaca) in Cyprus. Research Promotion Foundation, Lefkosia, Cyprus. Project Leader: S. Iezekiel.

13.  (2007-2008) Participation in six research projects in Cyprus «Natura 2000», financed by Republic of Cyprus.