Bird shaped sword - A question to the Dah experts

[Oriental-Arms]

Recently we stumbled on these two Dah (?) swords (Different places and times):



The wood scabbard is carved in the style of a bird body with the handle as the bird head:



And a close ups of the handles:



Blades 16 and 17 inches. Well forged, rather heavy and thick with a false back edge. One of the hilts is horn and one wood. Metal mounts are brass and iron. Total length 29 and 30 inches. One of the swords has an old illegible label of a store or a collection with good age on it.

Any ideas on origin and age??