Just this week, we published our results from 22 years of studies on bird populations in 2 100-ha plots in the Amazon forests of Ecuador in Global Ecology and Conservation.  Starting in 2010, we began to see widespread declines in observations and captures of birds, and reported on these patterns in 2015.  This latest article shows that declines have continued, with few exceptions, with ~90% of bird species that we examined declining.  These declines are widespread across levels of the forest and feeding guilds.  Most impacted are terrestrial and arboreal insectivores.  While not yet documented, the consequences of losing approximately 50% of population abundance are likely substantial and could result in local extinction of rare species, altered species interactions and social organization, as well as declining ecological function and biotic integrity of these tropical forest ecosystems.  You can access the publication here.