The mountains and birds were told to repeat Allah's praises with Dawud (AS).
۞وَلَقَدۡ ءَاتَيۡنَا دَاوُۥدَ مِنَّا فَضۡلࣰ اۖ يَٰجِبَالُ أَوِّبِي مَعَهُۥ وَٱلطَّيۡرَۖ وَأَلَنَّا لَهُ ٱلۡحَدِيدَ ١٠
And We certainly gave David from Us bounty. [We said], "O mountains, repeat [Our] praises with him, and the birds [as well]." And We made pliable for him iron