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(1) The relative densities of birds were compared, vegetation profiles measured and bird food resources assessed in seven exotic conifer plantations and five areas of native Nothofagus forest in New Zealand. (2) Of sixteen native bird species, seven were most abundant in native forest and two in conifer plantations. In contrast, none of the ten introduced birds preferred native forest, but at least seven were commonest in plantations. (3) There was no significant relationship between overall bird species richness (BSR) and foliage height diversity (FHD). However, when introduced and native birds were considered separately, the BSR of introduced species was negatively correlated with FHD whereas BSR of native birds was positively correlated with FHD. Several introduced passerines preferred structurally simple plantations, but there were always more native bird species in native forest than in plantations. (4) The …