Determine the valence intensity of the writer's mental state conveyed in the sentence "We’ve noted the presence of 68 other species of grassland songbirds in the proposed poison-baited areas ... including the Bobolink, Grasshopper Sparrow, Harris’ Sparrow and Le Conte’s Sparrow.". Provide a score from 0 to 1, where 1 signifies very positive and 0 signifies very negative.