How do nouns ending in Y preceded by a vowel form?

Most nouns ending in -y preceded by a vowel are made plural by just adding an -s to the end of the Word, for example: day to days; alley to alleys; boy to boys; guy to guys; etc.

Nouns ending in -y preceded by a consonant, take out the -y and add -ies for example: candy to candies; duty to duties; baby to babies; etc.