homehome Home chatchat Notifications


This endangered bird is losing its song

A conservation project seeks to help this tiny but impressive bird.

Fermin Koop
March 18, 2021 @ 12:00 pm

share Share

Scientists believe they have figured out why the population of the Regent Honeyeater, a critically endangered songbird originally from Australia, is dwindling even more. The 300 remaining individuals are losing their “song culture” as there is a limited number of father figures around to teach them the proper mating songs.

Image credit: Flickr / Valentin

The song of my people

The Regent Honeyeater (Anthochaera Phrygia) is a flagship woodland bird originally from Australia. Named after its striking yellow-and-black plumage, it mainly inhabits temperate woodlands and open forests of the inland slopes of south-east Australia. In the past decades, its numbers have been steadily declining due to the widespread clearance of forests — but they seem to have yet another problem: they’re losing their culture.

Ross Crates from the Australian University of Canberra initially set up to find the birds – which he described as finding a needle in a haystack as they occupy an area 10 times the size of the UK. When he finally saw some of them, he realized that their singing didn’t sound like a regent honeyeater – it felt like listening to another species.

“Song learning in many birds is a process similar to humans learning languages – they learn by listening to other individuals,” Crates told The Guardian. “When they leave the nest, they need to associate with other older males so they can listen to them sign and repeat over time. If they don’t, they don’t know what they should be singing.”

Male regent honeyeaters spend several months in their first year learning and refining the songs they’ll recite for the rest of their lives. Some learn from their fathers, but many leave the nest before they learn to sing so they need to find other mentors. But now, with only a few individuals left in the wild, this is becoming a difficult endeavor. Simply put, there are few mentors to pass the song to the next generations.

By combining historical recordings with citizen science data and five years of standardized population monitoring, the researchers looked at differences in regent honeyeater song and song complexity within and between wild and captive-bred birds. Then they examined the link between song type and population density and looked for geographical patterns.

The findings showed that the birds imitated other species such as friarbirds (Philemon), currawongs (Strepera) and cuckooshrikes (Campephagidae) – a symptom that the researchers believe is due to the loss of vocal culture. The study even suggested females are avoiding to breed and nest with males that sing unusual songs.

“When male birds sing, it’s like putting out an ad saying, ‘I’m over here, I’m species X, I’m Bob, and I’m really interested in finding a partner’,” Scott Ramsay, a behavioral ecologist not involved in the study, told BBC. “It could be that female honeyeaters aren’t even recognizing these unconventional singers as potential partners, and so they’re not approaching them.”

Still, it’s not all bad news. There’s already a project to release captive-bred birds into the wild every few years to boost the population. Juveniles have first been played recordings of regent honeyeater calls from speakers inside their aviaries. Now, two adults were placed in aviaries to see if this can also help the young males to learn the right song.

The study was published in the journal Proceedings of the Royal Society B.

share Share

A Brain Implant Just Turned a Woman’s Thoughts Into Speech in Near Real Time

This tech restores speech in real time for people who can’t talk, using only brain signals.

Using screens in bed increases insomnia risk by 59% — but social media isn’t the worst offender

Forget blue light, the real reason screens disrupt sleep may be simpler than experts thought.

Beetles Conquered Earth by Evolving a Tiny Chemical Factory

There are around 66,000 species of rove beetles and one researcher proposes it's because of one special gland.

We Should Start Worrying About Space Piracy. Here's Why This Could be A Big Deal

“We are arguing that it’s already started," say experts.

An Experimental Drug Just Slashed Genetic Heart Risk by 94%

One in 10 people carry this genetic heart risk. There's never been a treatment — until now.

We’re Getting Very Close to a Birth Control Pill for Men

Scientists may have just cracked the code for male birth control.

A New Antibiotic Was Hiding in Backyard Dirt and It Might Save Millions

A new antibiotic works when others fail.

Researchers Wake Up Algae That Went Dormant Before the First Pyramids

Scientists have revived 7,000-year-old algae from Baltic Sea sediments, pushing the limits of resurrection ecology.

A Fossil So Strange Scientists Think It’s From a Completely New Form of Life

This towering mystery fossil baffled scientists for 180 Years and it just got weirder.

ChatGPT Seems To Be Shifting to the Right. What Does That Even Mean?

ChatGPT doesn't have any political agenda but some unknown factor is causing a subtle shift in its responses.