Table 1.

Recording sites, social conditions for all the birds.

Birds	Captive birds	Wild birds
	CM1-CM4	WM1	WM2	WM3	WM4	WM5	WM6	WM7-WM8	WM9-WM11 WM12-WM13 WM14-WM17
Social conditions	Isolation	1 nest	1 nest	1 nest	1 nest	2 nests	3 nests	3 nests	6 nests Colony 1	11 nests Colony 2	18 nests Colony 3
Sites	Rennes (F)	Auckland (NZ)	Seewiesen (Germ)	Slimbridge (G.B)	Rennes (F)	Rennes (F)	Rennes (F)	Nouvoitou (F)	Rennes University Campus (F)
Pairing Status	None	Unpaired	Paired	Paired (2 0)	Paired	Paired	Paired	Paired	Paired
Dates recordings	January 1992	Spring 1987	Spring 1988	March 1990	March 1989	March 1992	March 1990	March 1979	March 1979 March 1982
References	Hausberger et al., 1995	Adret-Hausberger and Jenkins, 1988	Unpubl.	Hausberger and Black, 1990	Unpubl.	Unpubl.	Henry et al., 1994	Hausberger and Guyomarc'h, 1981	Hausberger and Guyomarc'h, 1981; Adret-Hausberger, 1986