Birthday blues. Brooklyn Beckham snubbed his dad David Beckham’s 51st birthday on social media — just weeks after he also ignored his mom Victoria Beckham’s big day . As the former soccer pro celebrated another year around the sun Saturday, Brooklyn and his wife, Nicola Peltz, remained radio silent about David online. Brooklyn Beckham snubbed his dad David Beckham’s 51st birthday online. (Pictured: David with a birthday cake.) Instagram/davidbeckham The former soccer pro was showered with love from his other three kids and his wife, Victoria Beckham. (Pictured: Romeo Beckham with his dad.) Instagram/romeobeckham The former athlete was showered with birthday tributes from his other three children — Romeo, 23, Cruz, 21, and Harper, 14 — as well as the ex-Spice Girls singer. “Happy Birthday ✨💫✨💫 we love you so much!! 🐔🐓🐔🐓🐓🐔🐓🐔@davidbeckham,” Victoria captioned her post alongside a video of David with his new chickens.…