In the latest installment of A WALK IN THE PARK WITH NICK MOLLE, naturalist Nick Molle goes in search of four birds with the ability to thrive in two completely different ecosystems: Swainson's Thrush, Wilson's Warbler, the Yellow Warbler and the Western Tanager. Filmed on two continents, BIRDS WITHOUT BORDERS follows a project jointly administered by the "sister cities" of Estes Park in Rocky Mountain National Park and Monteverdi in Santa Elena Cloud Forest Reserve, that seeks to better understand the birds' life cycles through their migratory patterns. Molle ventures into the coniferous forests of the Rocky Mountains and the lush tropical environs of Costa Rica with research biologists, park personnel, natural-history experts and conservationists to track the birds, with the goal of defining exact flight patterns and documenting changes in behavior. Along the way, they discuss the effect of environmental changes on the species, their unique partnership and the importance of shared conservation.
