Trump escalates attacks on rising GOP rival Haley, campaign sends bizarre 'birdbrain' stunt

Trump referred to Haley as "Birdbrain" and questioned her talent and temperament in social media posts.
Trump's campaign sent a birdcage with birdseed to Haley's hotel room, confirming they did it.
Haley has gained momentum with strong debate performances, now seen as top Trump challenger.
Haley sees Trump's attacks as a sign she's a threat, while critics call it desperate and weird.
Incident highlights Trump's penchant for personal attacks and nicknames against political rivals.