28/08/2026
Two Birds, One Evolutionary Story
Across the forests and grasslands of Sri Lanka, two of South Asia’s most spectacular birds tell a fascinating story of evolution.
The Sri Lanka Junglefowl, the national bird of Sri Lanka, and the Indian Peafowl, the national bird of India, are both striking examples of sexual dimorphism, where males and females of the same species can look remarkably different.
The male Junglefowl carries a vivid palette of red, orange, gold and deep green, while the female is dressed in quieter shades of brown. His brilliant plumage plays an important role in attracting a mate, while her more subdued colours help her blend into the surroundings when nesting and raising young.
The Indian Peafowl takes this contrast to another level. The male’s brilliant blue and green plumage, crowned by his spectacular train of iridescent feathers, is one of nature’s most extraordinary displays. The peahen, by comparison, is far more understated, helping her remain less conspicuous in her surroundings.
These differences are shaped by sexual selection.
Over generations, female preferences have helped drive the evolution of elaborate colours, feathers and displays in males.
At the same time, the pressures of survival have favoured camouflage in females, particularly during nesting.
Two remarkable birds. Two very different displays.
Yet both tell the same evolutionary story: where survival meets the search for a mate, nature creates extraordinary beauty.
