Author: n Jacek Krywkon

Bats eat the birds they pluck from the sky while on the wing

A handful of bat species hunt birds, and new sensor data tells us how.

There are three species of bats that eat birds. We know that because we have found feathers and other avian remains in their feces. What we didn’t know was how exactly they hunt birds, which are quite a bit heavier, faster, and stronger than the insects bats usually dine on.

To find out, Elena Tena, a biologist at Doñana Biological Station in Seville, Spain, and her colleagues attached ultra-light sensors to Nyctalus Iasiopterus, the largest bats in Europe. What they found was jaw-droppingly brutal.

Inconspicuous interceptors

Nyctalus Iasiopterus, otherwise known as greater noctule bats, have a wingspan of about 45 centimeters. They have reddish-brown or chestnut fur with a slightly paler underside, and usually weigh around 40 to 60 grams. Despite that minimal weight, they are the largest of the three bat species known to eat birds, so the key challenge in getting a glimpse into the way they hunt was finding sensors light enough to not impede the bats’ flight.

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Even with protections, wolves still fear humans

European wolves flee human conversation faster than dogs’ barking.

Back in May 2025, the European Parliament changed the status of wolves in the EU from “strictly protected” to “protected,” which opened the way for its member states to allow hunting under certain conditions, such as protecting livestock. One of the arguments behind this change was that the “tolerance of modern society towards wolves” led to the emergence of “fearless wolves” that are no longer afraid of people.

“Regulators made it clear though that there is no scientific evidence to back this up,” says Michael Clinchy, a zoologist at the Western University London, Canada. “So we did the first-of-its-kind study to find out if wolves have really lost their fear of humans. We proved there is no such thing as a fearless wolf.”

Red riding hood

The big bad wolf trope is found in plenty of our myths and fables, with Little Red Riding Hood being probably the most famous example. This mythical fear of wolves, combined with real damage to livestock, led to extensive hunting. By the mid-20th century, we’d pushed wolves to the verge of extinction in Western and Central Europe. Human-wolf encounters became very rare, and the big bad wolf myth faded away. But starting in the 1970s wolves became a protected species across Europe and North America, which caused wolf populations to bounce back and reoccupy some of their old habitats.

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