Welcome swallow

Description

The welcome swallow is a small size bird and is fast-flying.Their flying style is circular in pattern with swift darting motions.They have graceful shape and flight,moreover they often fly singly,in couples or in clusters.The welcome swallow is metallic blue-black above,light grey below on the breast and belly,and rusty on the forehead,throat and upper breast.It has a long forked tail,with a row of white spots on the individual feathers.These birds are about 15 cm (5.9 in) long,including the outer tail feathers which are slightly shorter in the female.The welcome swallow's weight is about 9-20g.From the Gould collection in Tasmania a “natural size” male had a wing size of 11.1 cm,tail size of 7.4 cm,and a culmen of 0.7 cm.While the female has 10.9 cm wings,a 6.25 cm tail,and a culmen of 0.7 cm.The call is a mixture of twittering and soft warbling notes,and a sharp whistle in alarm.However,their call is normally quiet and does not carry very far.