Bird Legmounts - VHF
They are not commonly used, but have proved useful for raptors and long-legged waders. Generally they are the last resort if the tail feathers are not fully developed and a harness is regarded as too risky. Care is required to ensure that the antenna does not get in the way of a walking bird. They are not likely to last as long as other tags, especially in raptors, because they are in prime position for being pulled at.