Yes, you can make your birthday private on Facebook by following these steps:
1. Log in to your Facebook account and go to your profile page.
2. Click on the "About" section, which is located below your profile picture.
3. Scroll down to the "Basic Info" section and find the "Birth Date" field.
4. Hover over the "Birth Date" field and click on the pencil icon that appears at the right.
5. From the drop-down menu, select "Edit Privacy."
6. A pop-up window will appear with privacy options. Choose your desired privacy setting for your birthday.
7. You can select options like "Only Me" to keep your birthday completely private, or you can choose to share it with specific friends or custom privacy lists.
8. Once you've made your selection, click on "Save Changes" to apply the new privacy settings to your birthday.
Following these steps will help you keep your birthday information private on Facebook, ensuring that only the people you want to share it with can see it.