Treefrogs near the top of a tropical rainforest

In May 2019, during a routine canopy survey near the National Forest Ecosystem Research Station at Xishuangbanna, in southwest China, an Asian black-webbed treefrog (Rhacophorus kio) was observed resting on leaf of flowering Parashorea chinensis tree (right). The same species again October only this time perched epiphyte (Microsorum punctatum) crown adult P (left). heights these particular dipterocarp trees were approximately 62 m, and two frogs 57.0 m 34.6 respectively, as measured via cranes – far exceeding maximum vertical height previously recorded (20.5 for Hyla versicolor) (Ecology 2017; https://doi.org/10.1002/ecy.1843). To best our knowledge, images likely document highest arboreal that have ever been photographed. It is uncommon to observe frog emergent (top) layer tropical rainforest, few reasons. For starters, considered one tallest capable growing up 80 which too high amphibian climb. relatively hot dry conditions typical habitat also seem unsuitable amphibians. Furthermore, members rely foliage protect themselves from predators physical exposure, effectively conceals them human observers. Thanks development forest science, biodiversity within layer, has largely overlooked previous decades, can now be studied more effectively. We suspect R kio may attracted food resources (mainly insects) season layer. If so, how many other found layer? And are worldwide declines large due deforestation, fragmentation, climate change influencing populations species?