A new report by the UK’s nature conservation co-ordinator on hen harriers in the UK says that persecution is a significant factor limiting growth of the hen harrier population. The Joint Nature Conservation Committee (JNCC) report, released today by Scottish Natural Heritage, considered scientific evidence on the distribution and nesting success of this bird of prey across all four home countries. Scientists writing the Hen Harrier Conservation Framework, to be published this Friday, looked at a range of factors affecting the distribution of hen harriers throughout the UK. The report’s authors looked at eight factors which could affect the hen…