Wild America Season 2 Episode 4 Call to Courtship

The seasonal melodies and trills, colors and behaviors of Birds. As spring unfolds, the sweet melodies of Birds provide a welcome break from the stillness of winter. The trills and eye-catching displays of courting males actually serve a dual purpose -- to intimidate rivals as well as to attract prospective mates. The song and dance rituals are all orchestrated toward a single goal -- to ensure the most fit pass on genes for future generations.