dicrurus macrocercus on a pole

adapted agile agility alert animal balance beak beaks bird birds black blue catching clear commonly contrasting dark dicrurus distinctive drongo drongos electricity elegant eyes feather feathers fence flight forked gently glossy hints hits insectivorous insects iridescent iron lighting line machine macrocercus maintain mast motion movement observation perch perfectly pole ready scan share sharp shine side signs silhouette silhouettes sleek slender striking subtle sunlight surroundings sway synchronized tail tails vehicle watchful weathered wings