These are some contemporary sources on the Anthropocene, Extinctions and Conservation as they relate either directly or indirectly to birding.
Mongabay: an invaluable on-line news source on contemporary worldwide environmental activism and conservation issues
Summary for policymakers of the global assessment report on biodiversity and eco-system services of the Intergovernmental Science-Policy Platform on Biodiversity and Eco-system Services, 6 May 2019, http://jaei.org.za/wp-content/uploads/2019/05/Summary-for-Policymakers-IPBES-Global-Assessment.pdf. Summary of the bad news about biodiversity loss.
International Commission on Stratigraphy, Subcommission on Quaternary Stratigraphy, Working Group on the ‘Anthropocene’, Results of Binding Vote by AWG, released 21 May 2019. https://web.archive.org/web/20190605091924/http://quaternary.stratigraphy.org/working-groups/anthropocene/. Summary of the arguments about whether we ‘officially’ declare the Anthropocene as a new geological era.
Thom van Dooren, Flight Ways: Life and Loss at the Edge of Extinction, New York: Columbia University Press, 2014. Why extinctions matter.