Hi, Saber, I'm not sure if you are familiar with article of hungarian coll. in announced file where general questions of the problem of coinfluence is discussed?
The role of parasites in ecology and evolution of migration and migratory connectivity J Ornithol (2011) 152 (Suppl 1):S141–S150
Elizaveta Liberman, i asked because I was going to start a study on migratory birds across Egypt on its way from Europe to Africa and vice versa and so thank you very much for your help and cooperation.