The ancestor of today's pinapinao, Hawaiian Megalagrion damselflies, diverged from Ischnurinae around 51 MA and likely evolved for over 20 MA before colonizing the Northwestern Hawaiian Islands. An ...

After 35 years, the secretive CIA sculpture finally gave up its mystery, thanks to a novelist, a playwright, and some misplaced documents. But the chase to decode continues.

The resident population found in mangrove habitat in Mexico, Central America, and northern South America has been split from American Yellow Warbler by some authorities for several years.

Indochinese Leopard faces a bleak future, with populations collapsing across South-East Asia due to snaring, poaching and habitat loss. Fewer than 800 individuals remain, scattered across isolated refuges in Thailand, Myanmar and Malaysia. Conservationists warn of cascading ecological consequences if this Critically Endangered subspecies vanishes, but targeted protection efforts offer a glimmer of hope.

Body size variation in vertebrates is a complex polygenic trait, tightly correlated with numerous aspects of a species’ biology, ecology, and physi...

Domestic cats, Felis catus, can be found almost everywhere in the world and estimating their impact on wildlife, including birds, requires the most up-to-date information. There are an estimated 9.3 million pet cats in Canada, 30–60% of which are given unrestricted access to the outdoors. With the best available data in 2013, cats were estimated to kill between 105–348 million birds per year in Canada, making them the leading measurable cause of bird mortality in the country. However, a decade later, research on outdoor cats and their predation of birds has increased considerably, providing an opportunity to revisit this mortality estimate. Using recent data on predation rates and cat abundance, we estimated that cats kill between 19 and 197 million birds per year in Canada, 71% lower than the earlier estimate. This does not mean that cat populations or predation rates on birds have declined since the previous estimate. Rather, we suggest that the difference can be primarily attributed to lower outdoor cat abundance estimated from field surveys compared to previously used cat ownership surveys and media reports of shelter intake data. Although the estimated number of birds killed annually by cats is considerably lower than the previous estimate, outdoor cats remain a serious concern for native bird populations.

Jumping can be hazardous for entomopathogenic nematodes (EPNs) as those that fail to attach to an insect host face death by predation or starvation...

Species population sizes fluctuate over time, and these temporal dynamics play a key role in governing the maintenance of biodiversity. Although modeling approaches have been developed to characterize...

Listing could affect availability for biomedical studies