BP Birthday Greetings plugin will send a birthday greeting notification to members. You just need to create a DOB field and have to map in the plugin settings, that you can find under options tab of BuddyPress settings. We have one widget called BuddyPress Birthdays that you can use in sidebars to display the list of member birthdays and can wish them as well using private message functionality of BuddyPress. One shortcode [ps_birthday_list] is also added which can be used to list birthdays as well.
