Density-dependence of nestling immune function and physiological condition in semi-precocial colonial bird: a cross-fostering experiment

Table 1 Information on black-headed gull colonies in which the study was conducted

Colony	Location	No. breeding pairs	No. exchanged clutches	High density area		Low density area
Colony	Location	No. breeding pairs	No. exchanged clutches	No. plots	Exp./control chicks	No. plots	Exp./control chicks
Rynskie	53°55′11″N 21°30′48″E	5000	88	2	6/6	2	34/21
Przykona	51°58′26″N 18°36′51″E	3000	70	1	31/33	2	17/13
Skoki	52°36′23″N 19°23′07″E	4100	142	2	59/38	4	35/56

ISSN: 1742-9994