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Biodiversity loss is one of the main challenges of our time, 1 , 2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space. 3 , 4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes, 5 , 6 , 7 vast areas of the tropics remain understudied. 8 , 9 , 10 , 11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity, 12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases. 13 , 14 , 15 To worsen this situation, human-induced modifications 16 , 17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge, 18 , 19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%-18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost., Competing Interests: Declaration of interests The authors declare no competing interests., (Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.)

Alexander Lees and Pramana Yuda introduce the songbird trade of Southern and Eastern Asia that is a major threat to regional bird populations., (Copyright © 2022 Elsevier Inc. All rights reserved.)

Vagrant birds are frequently recorded outside of their regular geographic range. A new study documents how vagrancy, in this case in an Asian songbird, can lead to establishment of a new migration route., (Copyright © 2021 Elsevier Inc. All rights reserved.)

Species are going extinct rapidly, while taxonomic catalogues are still incomplete for even the best-known taxa. Intensive fieldwork is finding species so rare and threatened that some become extinct within years of discovery. Recent bird extinctions in Brazil's coastal forests suggest that some species may have gone extinct before we knew of their existence., (Copyright © 2015 Elsevier Ltd. All rights reserved.)