Colin Kaepernick is giving back on his birthday ... and doing so for the people who need it most.
The former NFL quarterback was out in Oakland Sunday to celebrate his 32nd birthday, but rather than party it up ... he was out in the streets bright and early helping to feed and supply the countless homeless residents lining Tent City -- Oaktown's own skid row.
In partnership with his foundation, Know Your Rights Camp, and with the help of his girlfriend, Nessa, Colin was literally walking around handing out backpacks that were filled with snacks, socks, air quality masks, shampoo and other crucial resources.