n large animal 

Perception +11; low-light vision

Skills Acrobatics +12, Athletics +13

Str +5 Dex +4 Con +3 Int -4 Wis +1 Cha +0

AC  20; Fort +13, Ref +12, Will +7

HP 60

Speed 60 feet

Melee [>] beak +13 (reach 10 feet), Damage 2d8+5 piercing plus tearing clutch

Melee [>] talon +13 (agile), Damage 2d6+5 piercing plus Knockdown

Sprint [>>] Frequency once per minute; Effect The terror bird Strides three times in a straight line.

Stunning Screech [>] (auditory, emotion, fear, mental) The terror shrike unleashes a haunting screech that causes prey to freeze in fear. Each creature in a 30-foot emanation other than terror birds must attempt a DC 19 Will save. Regardless of the result, creatures are then temporarily immune for 1 minute. Critical Success The creature is unaffected.Success The creature is flat-footed until the start of its turn.Failure The creature is stunned 1.Critical Failure The creature is stunned 2.

Sudden Charge [>>] The terror shrike Strides twice. If it ends its movement within melee reach of one creature, it can make a melee Strike against that creature.

Tearing Clutch As terror bird, except 1d8 persistent bleed damage on a critical hit.

Bestiary 3, page 264.