1. a Dipartimento Biologia Animate , Università , 27100, Pavia, Italy
2. b Station Biologique Tour du Valat , Le Sambuc, F-l3200, Aries, France
3. c Estacion Ornitologica Albufera , Av.da Pinares 106, 46012, El Saler, Valencia, Spain
4. d 4 Groenendaal 8, 4041, XX Kesteren, Netherlands
5. e Pervomaiska Str., Apt 4, Belgorod-Dnesrtovsldi, 272300, Ukraine