Four months after Robin Williams’ death, his son Zak opened up about losing his father.

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"I miss him all the time,” the 31-year-old told People magazine in the latest issue on newsstands Friday. "Often I see something or if I'm watching a film, I think, 'Oh, man, he would have appreciated this' or 'He would have gotten a laugh out of this.'"

The legendary comedian, whose career spanned almost 40 years, committed suicide on Aug. 11 at the age of 63 after suffering severe depression.

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"There's not a day that goes by that we don't think about our dad,” Zak said referring to his siblings Zelda, 25, and Cody, 23.

In October, Zelda got a tattoo of a hummingbird to commemorate her father and showed it off via Instagram. The tattoo is inked on her right hand and sits above her father's birth date, "7.21.51," which appears on the inside of her wrist.

"For poppo," she wrote as a caption. "Thank you to the incomparable @dr_woo_ssc for so beautifully bringing my reminders to life. I'll always put my hand out to shake with a smile."

The hummingbird, drawn by famous tattoo artist Dr. Woo at Hollywood's Shamrock Social Club, is reflective of the wristbands that were given out at Robin's funeral. The bracelets included birds with the message, "Love the stillness of life."