Birds swarm around plane, forcing it to ditch... and pilot is amazed to discover why

Plane struggles to gain altitude

Justin needed to gain altitude to disperse the flock, but if he climbed too steeply, it would put the plane and everybody aboard it at risk.

Even more of a concern, the number of birds seemed to be increasing and the plane appeared to be labouring. Through the gaps in the black mass, Justin could suddenly see the tops of buildings zooming towards him...