The bulk update request #4182 is pending approval.

create implication black_quills (51) -> quills (1)
create implication blue_quills (246) -> quills (1)
create implication brown_quills (105) -> quills (1)
create implication green_quills (13) -> quills (1)
create implication grey_quills (13) -> quills (1)
create implication orange_quills (9) -> quills (1)
create implication pink_quills (72) -> quills (1)
create implication purple_quills (23) -> quills (1)
create implication red_quills (104) -> quills (1)
create implication tan_quills (3) -> quills (1)
create implication white_quills (14) -> quills (1)
create implication yellow_quills (15) -> quills (1)
create implication multicolored_quills (9) -> quills (1)
create implication two_tone_quills (9) -> multicolored_quills (9)
create implication rainbow_quills (0) -> multicolored_quills (9)
create implication monotone_quills (4) -> quills (1)

Reason: These are all different colors of quills.

The bulk update request #4183 is pending approval.

create implication arm_quills (61) -> quills (1)
create implication head_quills (58) -> quills (1)
create implication tail_quills (7) -> quills (1)
create implication tail_quills (7) -> tail (1537996)
create implication back_quills (16) -> quills (1)
create implication tied_quills (1) -> quills (1)
create alias quill_(anatomy) (0) -> quills (1)
create implication quill_hair (141) -> quills (1)
create implication quill_hair (141) -> pseudo_hair (29514)

Reason: More quill related tags, also an alias. Quill hair is quills that resemble hair. Technically quills are made of keratin though, so I can understand if the pseudo_hair implication shouldn't be here.