The Science of Birds

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Some places matter more to birds than others, and Important Bird Areas, or IBAs, are the sites scientists have flagged as places birds can't afford to lose. In Episode 140, host Ivan Phillipsen starts at Horse Creek Meadows, a sunlit mountain meadow in southwestern Oregon, and asks what it takes for a spot like this to earn that official designation. Who decides, and what does it actually do for the birds?

Along the way, the episode covers the four criteria behind the program, from endangered species to enormous gatherings of shorebirds. It visits IBAs from Arizona's sky islands to a Kansas wetland to Minnesota's famous Sax-Zim Bog. You'll also learn how these sites get their regular check-ups, and why so much of that work falls to volunteers and citizen scientists.

The episode also takes a candid look at what an IBA label doesn't do, and why a gap remains between knowing where birds need help and actually protecting those places.

Links of Interest

• IBA Explorer - National Audubon Society
• Important Bird and Biodiversity Areas (IBAs) - BirdLife

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Support the show

In each Random Bird Thursday (RBT) episode, the goal is to highlight a bird species that probably isn't going to get featured in a full-length podcast episode. These are birds we might overlook, even though they certainly deserve some appreciation and attention.

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⚠️ SPOILER ALERT!

The featured species in this episode is the Lesser Antillean Tanager (Stilpnia cuculata).

Sound Citations:

Jesse Fagan, XC42716. Accessible at www.xeno-canto.org/42716.

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~~~

Episode 139 of The Science of Birds takes listeners into prehistory to meet the Terror Birds: giant, flightless predators of the family Phorusrhacidae. Standing as tall as 10 feet, with axe-like beaks and sickle-clawed feet, these birds ruled South America for tens of millions of years after the dinosaurs disappeared.

Host Ivan Phillipsen explores how an isolated continent, some empty ecological niches, and the amazing process of evolution gave rise to these fearsome hunters. Along the way, the episode looks at how they lived, how they hunted, and how the various species ranged from terrifying to surprisingly small.

Links of Interest

• Terror Bird scene - Life on Our Planet[VIDEO]
• The Time Terror Birds Invaded - EONS [VIDEO]
• Terror Birds: The Giant Birds With Guillotine Beaks [VIDEO]
• When Giant Terror Birds Were Apex Predators [VIDEO]

Support the show

In each Random Bird Thursday (RBT) episode, the goal is to highlight a bird species that probably isn't going to get featured in a full-length podcast episode. These are birds we might overlook, even though they certainly deserve some appreciation and attention.

~~~~~~~~~~~~~~~~~

⚠️ SPOILER ALERT!

The featured species in this episode is the Himalayan Prinia (Prinia crinigera).

Sound Citations:

Rajeev Lochan, XC797143. Accessible at www.xeno-canto.org/797143.

Support the show

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~~~

In this episode, host Ivan Phillipsen steps back from bird facts themselves to explore the process behind them: the Scientific Method. He breaks down how scientific understanding is built, from that first spark of curiosity in the field all the way through hypothesis testing, data collection, and peer review.

To provide a simple example, Ivan walks through a real published study on a familiar backyard bird, tracing how scientists questioned a long-standing assumption about how the species finds its food and designed an experiment to get closer to the truth.

Along the way, the episode touches on hypothesis testing, experimental versus observational study design, and how researchers interpret and discuss their results once the data are in.

Support the show

In each Random Bird Thursday (RBT) episode, the goal is to highlight a bird species that probably isn't going to get featured in a full-length podcast episode. These are birds we might overlook, even though they certainly deserve some appreciation and attention.

~~~~~~~~~~~~~~~~~

⚠️ SPOILER ALERT!

The featured species in this episode is the White-throated Magpie-Jay (Cyanocorax formosus).

Sound Citations:

Isain Contreras Rodríguez, XC530762. Accessible at www.xeno-canto.org/530762.

Guillermo Funes, XC198353. Accessible at www.xeno-canto.org/198353.

Oscar Campbell, XC278635. Accessible at www.xeno-canto.org/278635.

Support the show

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~~~

Enter the murky aquatic realm of the family Podicipedidae in Episode 137 of the The Science of Birds podcast. Often mistaken for ducks, loons, or coots, grebes are unique, fascinating waterbirds with some bizarre physical traits and behaviors.

The episode covers everything from the specialized lobed toes of grebes and rear-positioned legs to their spectacular, highly synchronized courtship dances. Discover the unexpected identity of grebe's closest evolutionary cousins, learn why these diving birds swallow their own feathers, and explore the precarious mechanics of raising chicks on soggy, floating nests.

By the end, you'll know why these fluffy-butted water gremlins are truly great!

Links of Interest

• Western Grebe walking on the beach [VIDEO]
• Clark's Grebes Rushing Ceremony in Oregon[VIDEO]
• Hooded Grebes courtship[VIDEO]
• Great Crested Grebes courtship [VIDEO]

Support the show

In each Random Bird Thursday (RBT) episode, the goal is to highlight a bird species that probably isn't going to get featured in a full-length podcast episode. These are birds we might overlook, even though they certainly deserve some appreciation and attention.

~~~~~~~~~~~~~~~~~

⚠️ SPOILER ALERT!

The featured species in this episode is the Orange-headed Thrush (Geokichla citrina).

Sound Citations:

Chuenguey Hwang, https://www.youtube.com/watch?v=l3dXua_kD20

Support the show

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~~~

In this "from the field" episode of The Science of Birds, Ivan Phillipsen takes you on a journey through some iconic landscapes in Australia. Fulfilling a childhood fascination with the Outback, Ivan splits his two-week adventure between the arid, rust-red deserts of the Northern Territory's Red Centre and the lush, ancient tropical rainforests of Queensland.

Along the way, he shares the excitement of racking up some "lifers" while encountering some of Australia’s unique avian families. From colorful, charismatic parrots and adorable finches to highly sought-after, elusive rainforest dwellers, Ivan details the thrill of tracking down endemic species and observing fascinating bird behaviors in the wild. Beyond the incredible birding, he also sets out to find a few of Australia's most iconic and unusual mammals.

Tune in to hear all about the rewarding highs of birding in the land down under, and get a sneak peek at an exciting future birding expedition he is scouting for 2028!

Link to this episode on the Science of Birds website

Support the show

In each Random Bird Thursday (RBT) episode, the goal is to highlight a bird species that probably isn't going to get featured in a full-length podcast episode. These are birds we might overlook, even though they certainly deserve some appreciation and attention.

~~~~~~~~~~~~~~~~~

⚠️ SPOILER ALERT!

The featured species in this episode is the Rufous Cacholote (Pseudoseisura unirufa).

Sound Citations:

Sjoerd Mayer, XC3496. Accessible at www.xeno-canto.org/3496.

Support the show

In each Random Bird Thursday (RBT) episode, the goal is to highlight a bird species that probably isn't going to get featured in a full-length podcast episode. These are birds we might overlook, even though they certainly deserve some appreciation and attention.

~~~~~~~~~~~~~~~~~

⚠️ SPOILER ALERT!

The featured species in this episode is the Rufous-sided Gerygone (Gerygone dorsalis).

Sound Citations:

Colin Trainor, XC138529. Accessible at www.xeno-canto.org/138529.

Support the show

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~~~

Episode 135 takes on one of North America's most recognizable birds: the Red-winged Blackbird, Agelaius phoeniceus. With a population possibly approaching 200 million, this species is a fixture of wetlands and marshes across the continent, and one of the most intensively studied birds in ornithology.

Ivan explores the biology and behavior that make this bird so compelling: its striking sexual dimorphism, the surprisingly complex story behind those iconic red epaulets, and a breeding system that turns out to be far messier than it first appears. Territorial wars, interspecies conflict, and the occasional human casualty are all part of the picture.

The episode also digs into the Red-winged Blackbird's fraught relationship with agriculture—from the enormous crop damage these birds can cause to the high-tech and sometimes controversial methods farmers use to manage them. And despite being among the most abundant birds on the continent, the species has seen a significant population decline over recent decades.

Link to this episode on the Science of Birds website

Support the show

In each Random Bird Thursday (RBT) episode, the goal is to highlight a bird species that probably isn't going to get featured in a full-length podcast episode. These are birds we might overlook, even though they certainly deserve some appreciation and attention.

~~~~~~~~~~~~~~~~~

⚠️ SPOILER ALERT!

The featured species in this episode is Jameson's Snipe (Gallinago jamesoni).

Sound Citations:

Niels Krabbe, XC238296. Accessible at www.xeno-canto.org/238296.

Niels Krabbe, XC47237. Accessible at www.xeno-canto.org/47237.

Niels Krabbe, XC238308. Accessible at www.xeno-canto.org/238308.

Support the show

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~~~

This is Episode 134. Ivan takes on one of the most iconic bird families in the avian world: Accipitridae—the hawks, eagles, kites, buzzards, harriers, and Old World Vultures. It's a massive and diverse group with no good nickname, though Ivan has a few suggestions.

The episode covers the key traits that make these birds such formidable predators—from their hooked bills and locking talons to the bony "brow ridge" that gives them their signature scowl. Ivan also digs into the family's staggering diversity: 249 species across 73 genera.

Along the way, there's some evolutionary biology, a Weirdo Alert, and a look at the ancient giant that makes today's largest eagles seem modest by comparison.

Links of Interest

• Haast's Eagle episode of the Blurbs podcast
• Harpy Eagle video in Spanish, by Alberto Lobato [VIDEO]
• Wild Latitudes: Worldwide birding and nature tours.

Link to this episode on the Science of Birds website

Support the show

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~~~

In this From the Field episode Ivan takes listeners along on a two-week scouting trip to Romania where he explored the country's remarkable natural landscapes in preparation for a future birding tour. There's just one catch: his binoculars broke almost immediately after arriving.

Despite that setback, Ivan racks up some lifers and shares highlights from two very different corners of the country. First, he heads to the Danube River Delta on the Black Sea coast—widely considered the best birding site in Europe—where he had an unforgettable day exploring the maze of channels by boat. Then he crosses the Carpathian Mountains into Transylvania, where ancient forests, castles, charming villages, stork nests, and bears round out the adventure.

Link to this episode on the Science of Birds website

Support the show

In each Random Bird Thursday (RBT) episode, the goal is to highlight a bird species that probably isn't going to get featured in a full-length podcast episode. These are birds we might overlook, even though they certainly deserve some appreciation and attention.

~~~~~~~~~~~~~~~~~

⚠️ SPOILER ALERT!

The featured species in this episode is the Jungle Owlet (Glaucidium radiatum).

Sound Citations:

Dr S S Suresh, XC1102415. Accessible at www.xeno-canto.org/1102415

Swami Bogim, XC1037332. Accessible at www.xeno-canto.org/1037332.

Support the show

👕 Bird Merch — Get yourself some bird shirts!

~~~

In Episode 132, Ivan Phillipsen explores the "circulatory system of the land"—the world of rivers and streams. These flowing-water environments, serve as vital habitats for avian life.

The episode delves into the ecology of these waterways, breaking down the differences between clear, rocky upland streams and the warmer, sediment-rich rivers of the lowlands. Listeners will learn about the distinct "zones" of a stream—from the central channel to the lush riparian zone—and discover what resources birds need to thrive in these high-energy environments.

At the heart of the discussion are the "stream specialists"—a select group of approximately 60 bird species worldwide that are evolutionarily tied to flowing water. From the underwater antics the American Dipper to the massive, fish-hunting Blakiston’s Fish-Owl, the episode highlights the incredible adaptations of birds that make their living among the rapids. Whether exploring the global diversity hotspots of the Himalayas or the secretive lives of "streamcreepers," this episode is an inviting look at the birds that call the water's edge home.

Wild Latitudes: Worldwide birding and nature tours.

Link to this episode on the Science of Birds website

Support the show

In each Random Bird Thursday (RBT) episode, the goal is to highlight a bird species that probably isn't going to get featured in a full-length podcast episode. These are birds we might overlook, even though they certainly deserve some appreciation and attention.

~~~~~~~~~~~~~~~~~

⚠️ SPOILER ALERT!

The featured species in this episode is the Bicolored Antbird (Gymnopithys bicolor).

Sound Citations:

Niels Krabbe, XC250916. Accessible at www.xeno-canto.org/250916.

Johan Chaves, XC949385. Accessible at www.xeno-canto.org/949385.

Niels Krabbe, XC248252. Accessible at www.xeno-canto.org/248252.

Patricio Mena Valenzuela, XC275411. Accessible at www.xeno-canto.org/275411.

Support the show

👕 Bird Merch — Get yourself some bird shirts!

~~~

In Episode 131 of The Science of Birds, host Ivan Phillipsen takes a deep dive into one of North America's most familiar woodpeckers: the Northern Flicker (Colaptes auratus). Found year-round across the continent, this bird has a habit of making itself known in some startling ways, including drumming loudly on rooftops at the crack of dawn.

The episode describes the flicker's appearance, from its bold spotted plumage and signature white rump patch to the mustache-like malar stripe that sets males apart. It also covers the bird's surprisingly un-woodpecker-like lifestyle—spending most of its time hopping on the ground in pursuit of ants—and the full range of sounds it uses to communicate, from the mechanical "long call" to the rhythmic "wicka call" used in courtship and territorial disputes.

The episode gets into the centuries-old debate over whether the yellow-shafted and red-shafted forms should be considered separate species, the remarkable hybrid zone stretching across the Great Plains, and what recent genomic research has revealed about the genetics behind their different color forms. Also covered are the flicker's breeding behavior, diet, and its ecological role as a keystone species.

Despite being one of the most recognizable birds in North American backyards, flicker populations have declined by nearly 50% since 1966 — a sobering reminder that even familiar species need our attention. Tune in to learn all about this loud, lovable, ant-obsessed bird.

Links of Interest

• Northern Flicker drumming on metal roof[VIDEO]
• Pair of flickers doing the "Wicka Dance" [VIDEO]

Wild Latitudes: Worldwide birding and nature tours.

Link to this episode on the Science of Birds website

Support the show

In each Random Bird Thursday (RBT) episode, the goal is to highlight a bird species that probably isn't going to get featured in a full-length podcast episode. These are birds we might overlook, even though they certainly deserve some appreciation and attention.

~~~~~~~~~~~~~~~~~

⚠️ SPOILER ALERT!

The featured species in this episode is the Green-breasted Pitta (Pitta reichenowi).

Sound Citations:

Magnus Wadstein, XC534681. Accessible at www.xeno-canto.org/534681.

Jesse Fagan, XC146919. Accessible at www.xeno-canto.org/146919.

Support the show