"Ecologists who reconstruct and study past ecosystems have diverse sources of data and methods to go way back in time, before the global industrial revolution, before European expansion, before some of the big changes."
https://undark.org/2020/05/18/conservation-science-historical-data/
Wildlife corridors and bridges are helping animals migrate. Check it out at David Byrne's Reasons T B Cheerful.
https://reasonstobecheerful.world/infrastructure-wildlife-migration/
Mountain gorilla population is on the rise due to conservation efforts on the ground.
Have a good read about an incredible 7,500 mile winged migration.
Fireflies are beautiful and endangered. Take a virtual look at their annual display in the Great Smoky Mountains. This is a lovely blog site as well.
https://blog.therainforestsite.greatergood.com/synchronous-fireflies-great-smoky-mountains-video/
Urban dwellers are planting dense copses of myriad native species in brownfield sites using a method dubbed the Miyawaki Forest to increase biodiversity and Soak up CO2.
https://www.weforum.org/agenda/2020/07/tiny-urban-forests-miyawaki-biodiversity-carbon-capture/