When was the song “Bird” released by AKB48?

The song Bird was released in 2007, on the album “Dareka No Tame Ni”.

AKB48

Bird

yoake ni oikosarete
kuruma no HEDDORAITO keshita koro
machi e kaeru
AKUARAIN wa
hanasu ni wa naga sugite
hashiru shikanai

ai wa
hane wo ushinatta tobenai tori
joshu seki no mado
kaze wo kanjite
ai wa
hane wo ushinatta tobenai tori
kokoro no kago ni
tojikome rarete
aa mou ano sora wa
watashi no mono ja naku naru hi ga kita

hoka ni kuruma mo nakute
kodoku ga zutto tsutzuiteru
umi hotaru wo
toorisugire ba
omoide no yokogao ga
namida de nijimu

watashi
tobi kata wasureta kanashii tori
ima iru basho ni
uzukumaru dake
watashi
tobi kata wasureta kanashii tori
anata no mune ni
tadori tsukenai
aa kono chijou de wa
jiyuu wo ubawareta mama SAYONARA