A drongo bird perched on a brown cow while the cow eats the surrounding greenery, highlighting the natural balance and symbiotic relationship between different species

drongo bird cow bonding parasite perched brown cow greenery stock footage nature wildlife symbiosis mutualism ecology biodiversity conservation protection fauna flora environment grazing pasture vegetation feeding foraging animal behavior cooperation relationship partnership balance natural ecosystem habitat wilderness birdlife avian mammal livestock rural countryside peaceful farm domesticated fresh air nutrition diet agriculture farming scenic landscape