if you have Ipod or mp3 player, one that you can record on. Record all your other birds singing, talking, all those sounds that Yoshi would know, along with you calling him. play that every place you look for him. play it in near his cage also. i had friend that lost her U2 and she did that for hours. all of sudden there was U2 scream and morty flew on to her hand. he was clipped and still flew off. he was never let out of the bird room again. her grandson had let him out of the room.
yoshi, honey bird, come home