Hesitating Birthday (ためらい バースデイ Tamerai Bāsudei) is Mission 16 of Macross Δ. It first aired on Tokyo MX and BS11 in Japan on July 17, 2016.
Aboard the Island, Makina and Chuck plan a surprise party for Freyja's 15th birthday. Hayate and Mirage go shopping for a present while Makina, Reina, and Chuck spy on them. On the night of the party, Freyja gives a speech about her childhood on Windermere and what she did to become a member of Walküre before Hayate arrives with his gift to her. Meanwhile, Arad and Robert are discussing about what happened to Wright with Robert requests Arad keeping their discussion about Hayate's father as a secret.