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October 23, 2020

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Fish Exposed to Even Small Amounts of Estrogen Produce Fewer Males

A biologist conducted experiments with North American freshwater fish called least killifish. She found that fish exposed to estrogen in concentrations of 5 nanograms per liter in controlled lab ...

DNA in Fringe-Lipped Bat Feces Reveals Unexpected Eating Habits

By examining the guano of the fringe-lipped bat (Trachops cirrhosus), biologists encountered surprising results about its eating habits and foraging ...

These Two Bird-Sized Dinosaurs Evolved the Ability to Glide, but Weren't Great at It

Despite having bat-like wings, two small dinosaurs, Yi and Ambopteryx, struggled to fly, only managing to glide clumsily between the trees where they ...

Social Life as a Driving Factor of Birds' Generosity

Taking a look at generosity within the crow family reveals parallels with human evolution. Working together to raise offspring and increased tolerance towards group members contribute to the ...
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Light Pollution Alters Predator-Prey Interactions Between Cougars and Mule Deer in Western US

A new study provides strong evidence that exposure to light pollution alters predator-prey dynamics between mule deer and cougars across the intermountain West, a rapidly growing region where ...

Odors as Navigational Cues for Pigeons

Volatile organic compounds identified that can be used for olfactory navigation by homing ...

Losing Flight Had Huge Benefits for Ants

Researchers have taken detailed scans of worker ants to examine the hypothesis that the loss of flight is directly connected to the evolution of ...

Mystery Over Decline in Sea Turtle Sightings

The number of sea turtles spotted along the coasts of the UK and Ireland has declined in recent years, researchers ...

World's Greatest Mass Extinction Triggered Switch to Warm-Bloodedness

Mammals and birds today are warm-blooded, and this is often taken as the reason for their great ...

Protecting Ecologically Important Krill in the Southern Ocean from Overfishing

Although the krill catch is regulated, caution is required to avoid endangering the population itself and the species that depend on it, warns a group of krill ...

Bats Save Energy by Reducing Energetically Costly Immune Functions During Annual Migration

A team of scientists led by the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) investigated whether and how the immune response changes between pre-migration and migration seasons in ...

Australian Carp Virus Plan 'Dead in the Water'

Plans to release a virus to reduce numbers of invasive Common Carp in Australia are unlikely to work and should be dropped, researchers ...

Beak Bone Reveals Pterosaur Like No Other

A new species of small pterosaur - similar in size to a turkey - has been discovered, which is unlike any other pterosaur seen before due to its long slender toothless ...

Mapping out Rest Stops for Migrating Birds

A team of researchers have developed a new metric called the stopover-to-passage ratio that can help determine if a majority of birds are flying over a particular site or stopping at the site to ...

An Alternative to Animal Experiments

Researchers have cultured so-called intestinal organoids from human intestinal tissue, which is a common byproduct when performing bowel surgery. These small 'miniature intestines' can be ...

Plastics Threat to South Pacific Seabirds Confirmed

Plastic gathered from remote corners of the South Pacific Ocean, including nesting areas of New Zealand albatrosses, has confirmed the global threat of plastic pollution to ...

Swine Coronavirus Replicates in Human Cells

A strain of coronavirus that has devastated the pork industry has the potential to infect humans as well, according to new ...

On the Trail of Novel Infectious Agents in Wildlife

A research team investigated the causes of severe respiratory disease in peccaries and taxonomically characterized a novel Streptococcus species (Streptococcus catagoni sp. nov.) based on its ...

Crayfish 'Trapping' Fails to Control Invasive Species

Despite being championed by a host of celebrity chefs, crayfish 'trapping' is not helping to control invasive American signal crayfish, according to new ...

Sea Star's Ability to Clone Itself May Empower This Mystery Globetrotter

The identity of wild cloning sea star larvae has been a mystery since they were first documented in the Caribbean. The most commonly collected cloning species was thought to belong to the ...

Ancient Tiny Teeth Reveal First Mammals Lived More Like Reptiles

Pioneering analysis of 200 million-year-old teeth belonging to the earliest mammals suggests they functioned like their cold-blooded counterparts - reptiles, leading less active but much longer ...

There's a Gene for Detecting That Fishy Smell, Olfactory GWAS Shows

Some people carry a mutation in a particular gene that makes the smell of fish less intense. The study, which is the largest genome-wide association study (GWAS) of olfactory genes in humans ...

Study Finds Fungal Disease of Snakes in 19 States, Puerto Rico

Researchers surveyed for an infection caused by an emerging fungal pathogen that afflicts snakes. The research effort found infected snakes in 19 states and Puerto Rico, demonstrating that the fungus ...

Crabs Are Key to Ecology and Economy in Oman

The intertidal mudflats of Barr Al Hikman, a nature reserve at the south-east coast of the Sultanate Oman, are crucial nursery grounds for numerous crab species. In return, crabs are a vital element ...

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