This model is suited for bird weight in the range 0.8kg-1.4kg. For example, these are the large falcons such as Falco peregrinus, Falco cherrug, Falco biarmicus and other. It is necessary to comply with the tracker with the individual bird weight (and size), in the given range, due to bird’s specific natural behavior, biology, habitat, etc. EBT-28 is also suitable for the large birds such as hawk (Accipiter gentilis), pern (Pernis apivorus), buzzard (Buteo buteo), heron (Nycticorax nycticorax), swamp harrier (Circus aeruginosus), common shelduck (Tadorna) and other. It is possible to use the devices for tracking of smaller birds as well, such as little egret (Egretta garzetta). Nevertheless the smaller bird’s weight of this breed, EBT-28 would not disturb their natural life and habits (e.g. moving and surviving of the birds) due to the specific characteristics of bird’s flight pattern.