This question already has an answer here:
I saw on facebook recently where its states and individuals birthday for all to see and comment the use of "their", which seemed inappropriate to me. Upon further investigation on my singular male friend celebrating his birthday. Facebook had:
Today is their birthday.
uhmm... "their" birthday implies plural to me, so what is the correct use here? Is facebook right or am I right?
I figured: Today is his birthday or gender-less Today is its birthday.