Britney's 'Affectionate' Visits with Her Kids

02/28/2008 at 05:20 PM EST

Britney Spears is spending more quality time with her sons.

Preston, 2, and Jayden, 17 months, spent more time at their mother's house on Wednesday morning – the third visit Spears has had with her children since lawyers for the singer and her ex-husband Kevin Federline reached a visitation agreement on Feb. 22.

Spears's recent visits with her boys have been full of hugs and affection, PEOPLE reports in its new issue (on newsstands Friday). "Kids this age are amazingly resilient, and the very close bond that Britney has with her children is apparent," a source tells PEOPLE.

On Saturday, Spears reunited with her sons for the first time since she was hospitalized at Cedars-Sinai Medical Center Jan. 3. She also had another visit with them Monday.

According to the source, Spears's father, Jamie, and psychiatrist Dr. Lee Sadja have been monitoring the visits between the boys and Spears, who has had two stints in the hospital this year. Sadja began treating the singer during her most recent hospitalization at the UCLA Medical Center psych ward.
– Howard Breuer and Pernilla Cedenheim