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A combination of searching for nests and responses to taped calls of spotless crakes (Porzana tabuensis) was used to determine habitat use by and abundance of spotless crakes and marsh crakes (P. pusilla). Spotless crakes preferred to nest in scattered to dense tussock sedge (Carex secta) with an overstorey of raupo (Typha orientalis). Responses to taped calls indicated that they may have also nested in dense flax (Phormium tenax) and dense raupo. Limited information on marsh crakes indicated that they nested in tussock sedge with little or no raupo overstorey.