The Biodiversity Heritage Library (BHL) is a consortium of natural history and botanical libraries that provides online access to digitized biodiversity literature. This document summarizes BHL developments from January to September 2009, including the addition of new partner institutions and content, usage statistics, and ongoing technical projects to improve infrastructure, tools, and services. Key ongoing goals are integrating content and tools from BHL-Europe partners and building out capabilities for community curation of bibliographic metadata and full text articles.