Does being beautiful mean dying sooner? In nature, it can. | Richard Prum | Big Think

TL;DR

The Club-winged Manakin bird produces its unique mating calls by shaking its wing feathers, which have evolved to be solid and elaborate, making it less capable of flying. This showcases how beauty in nature can lead to innovative and costly adaptations.

Transcript

One of the most extraordinary examples of beauty happening in the natural world is the courtship display song of the Club-winged Manakin. The club-winged manakin is a South American bird that sings with its wings. The female club-winged does all the nesting and builds the nest and lays the eggs and takes care of them all on her own, but she chooses... Read More

Key Insights

• 😘 The Club-winged Manakin bird produces its mating calls by shaking its wing feathers, creating a unique sound.
• 😘 The wing bones of the Club-winged Manakin have evolved to be solid and elaborate for enhanced mating calls.
• 😘 Females also possess elaborate wing bones, despite not producing the wing song.
• 😘 Mate choice has led to the evolution of decadence in the Club-winged Manakin, compromising flight capabilities.
• 💅 This example highlights the innovative nature of beauty in the natural world.
• 😘 The Club-winged Manakin's adaptations challenge the notion that beauty is merely skin deep.
• 🧉 The compromise in flight capabilities due to mate choice may serve as a display of "honesty" and quality.

Questions & Answers

Q: How does the male Club-winged Manakin produce its mating call?

The male Club-winged Manakin produces its mating call by rapidly shaking its wing feathers, which creates a unique "Bip! Bip! WAAANG" sound. This sound is produced by the rubbing together of the wing feathers.

Q: Why have the wing bones of the Club-winged Manakin evolved to be solid?

The wing bones of the Club-winged Manakin have become solid and elaborate to enhance the production of the wing song. Studies have shown that these adaptations in the wing bones make the mating calls more attractive to females. However, these changes also make the birds less capable of flying.

Q: Do female Club-winged Manakins also have elaborate wing bones?

Yes, female Club-winged Manakins also have the same elaborate and thickened wing bones as the males. However, unlike the males, they do not produce the wing song. The wing bones develop in the embryo before the sex of the bird is determined, resulting in both males and females inheriting these traits.

Q: How does mate choice impact the evolution of the Club-winged Manakin?

Mate choice in the Club-winged Manakins has led to the evolution of decadence. Both males and females have been made worse off in terms of flight capabilities due to the selection for beauty. This showcases how mate choice can act in opposition to natural selection.

Summary & Key Takeaways

• The female Club-winged Manakin builds the nest and raises the offspring alone but chooses mates based on their unique wing song.

• The male Club-winged Manakin produces its mating call by shaking its wing feathers, creating an "electronic" sound.

• The wing bones of the male and female Club-winged Manakins have evolved to be solid and elaborate, making them less efficient at flying.