okie if u want full soln/
let v = vertical velocity of projectile ....
v2/2g=2h ...... v2=4gh///
now
h= vt-1/2gt2
or we get
t = v ±√v2-2gh/g
time the bird had to fly the distance =
v+√v2-2gh/g
√4gh + √2gh/g
time the ball had
2√2gh/g
therefore...
let u1=ball horizontal vel .... u2 = bird vel
u2√4gh + √2gh/g = u1 2√2gh/g
u2/u1 = 2√2/2+√2 = 2/(√2 +1)
hope u understood ...............