Again, it's not required but it doesn't hurt heheheI'm going to put my DOB on the back of each photo, too; better safe than sorry.
Just make sure that it has the real requirements:
Requirements
- Provide two (2) identical citizenship photographs (except Renunciation applications, where only one (1) photo is required.)
- Your photographs must comply with the specifications below. If the photographs do not meet the specifications, you will have to provide new photographs before your application can be processed.
- Photographs must be printed on quality photographic paper.
- Provide the name of the photographer or the studio, the studio address and the date the photos were taken on the back of the photos
- Print the name of the person on the back of the photos.