A recent research found that exotic plants that critically endangered Christmas Island flying foxes feed on have less nutritional value and do not provide them a balanced meal. researchers worry this would further threaten the survival of flying foxes and the local ecosystem, as they are important pollinators and seed dispersers on the island.
porcupines are being illegally hunted for meat and medicine in Indonesia. their meat are usually consumed; their spines are for decorative purposes and their bezoars are traditionally used to cure poisoning, typhoid and cancer in south east Asia. there are five species of porcupines in Indonesia. Their population is declining due to habitat loss and illegal poaching.
Weirs were built on the Severn Rivers in UK for transportations; many fishes like salmons and eels were unable to migrate back for spawning from the ocean for over 170 years. Recent years, there are plans to create routes around four major weirs, and two of them are completed recently; the team is hoping to see the return of the twaite shad, traditionally known as the May fish, this May.
There only fewer than 100 of critically endangered Sumatran rhinos, and they are mainly threatened by poaching, habitat loss and fragmentation. Research found they retain higher genetic diversity as expected, means they are more likely to survive threats like climate change or disease. However, with small population size they show low levels of inbreeding. This worries the researchers because another subpopulation showed a sudden outbreak of inbreeding before their extinction.
In the past, African forest elephant (Loxodonta cyclotis) and African savanna elephant (Loxodonta africana) were both listed as the same species and was a Vulnerable species. recently research shows the habitats and distributions are different for both species, and they rarely overlap. the population of African forest elephant has declined 86% in the past 31 years and is now listed as Critically Endangered; the number of African savanna elephant has dropped 60% in the last 50 years, and it is now listed as Endangered.
habitat for the endangered Zanzibar red colobus is fragmented and continues to shrink because of tourism growth in Zanzibar, Tanzania. in average, a red colobus is killed every 2-3 weeks because of vehicle collisions. To reduce the number of collisions, speed bumps were installed in roads the red colobus frequently cross. with the speed bumps, it helps to reduce the number to 1 collision in 6 weeks. Officials are planning to install more speed bumps in the future to further reduce the risk of collision.
an endangered cinereous vulture was found killed by diclofenac in Spain recently. Diclofenac is a common pain relieve drug for livestocks. If a vulture ate carcasses of cattle treated with this drug, it will damage its kidney and cause death. Diclofenac has been banned in most Asian regions, but is still legal in Spain and Italy as their farmers and regulators claim to dispose cattle carcasses properly.
in Brazil, some maned wolves that live along the border between the states of São Paulo and Minas Gerais are losing their fur. they were diagnosed with skin disease caused by mites from domestic dogs. Human activities like soy farming and cattle ranching are causing deforestation in the areas; maned wolves are threatened by habitat lost; the chance of contact with human has increased and could result in virus infestation.
Young male regent honeyeaters will learn their songs from elder males after they leave the nest. 90% of their habitat is lost because of human developments; there are only around 300 of them in the wild now, and are listed as critically endangered. With such small population, young males are unable to meet other elder males, and ended up learning other birds’ songs. Singing the wrong song means females might not mate with them. Without breading, they are moving closer to extinction.
Over 430 West Indian manatees in Florida died since the beginning of 2021 mainly because they were starving. Pollution is causing continuous algal blooms and blocking out sunlight which is vital for seagrass growth, leaving manatees without food and starve to death.