Oops, it doesn't look like 'strange bird day' is a national day..

Other days

ask out your crush

Ask Out Your Crush Day
blanket fort

Blanket Fort Day
self care

Self Care Day
gum

Gum Day
fiancee

Fiancee Day
boba

Boba Day
ruby

Ruby Day
carpenters

Carpenters Day
one

One Day
unicorn

Unicorn Day