Welcome to the forum. I have just killed my first two birds with an arrow, though I have many birds by gun, and this is my reccomendation. If possible turn down the poundage of your bow to 45-50lbs. in an effort to keep the shaft in the bird, also there is a product or products that go on your shaft, some called turkey stoppers, that prevent arrow fly throughs, and then as far as broadheads go if your skilled enough maybe a big blade guillitine type razor head is for you. In the case of the first bird my bow was set at 60 lbs and the arrow hit him perfect at the but of the wing from 10yds he took off to fly but couldn't because of the damage to the left wing and ran into a swollen creek and thats the last I saw of him. the second bird was at 45yds and the arrow speed at declined considerably because of the distance and the arc of the arrow flight help pin the bird to the ground resulting in a recovery less than 20 ft from where she was hit. One bird was shot from a blind and one from good cover, although I highly recommend the use of a blind.
GOOD LUCK, GOD BLESS, AND STAY SAFE!