Spirit sense menir Druid questiin

[Crimlock NL]

Hi all! I was wondering how exactly the spirit sense ability alters detect undead. How I read it it adds more types, not only undead but also fey and outsiders. When detecting undead you can also detect the sub type, ethereal and incorporeal... Or normal offcourse.
Is this right??

Spirit sense:
At 1st level, a menhir savant can detect the presence of undead; fey; outsiders; and astral, ethereal, or incorporeal creatures. This ability functions like detect undead, and the druid detects all of these creatures rather than trying to detect one kind.

[KingOfAnything]

It's just like all the other detect spells. It just detects undead, fey, outsiders, and astral, ethereal, or incorporeal creatures all at once. Not just undead subtypes; you can detect ethereal dragons, or astral humanoids, too.