One stick approximately 20 cm long, or a pencil for a regular 500ml bottle
Drawing pin (or something else to pierce the bottle)
Take these simple steps:
Clean your bottle and take off the label.
Use the pin to pierce holes approximately 2cm from the bottom of the bottle (for the perch), 5cm from the bottom (for feeding holes), and 1 cm from the top (for the string). Once pierced, cut small holes (approx 3/4 cm) in the 6 places you have pierced the bottle. If the holes are too big the seeds may fall out. An adult may need to help with this step.
Put your stick or pencil through the bottom 2 holes of the bottle. This is the perch. If preferred you can add 2 perches, as shown in the picture above.
Put a long piece of string through the top 2 holes in the bottle, and tie it up above the bottle. The length of the string should be approximately 40-50cm but can vary depending on the thickness of the branch where you will hang the feeder.
Put seeds or other bird feed into the bottle, and hang it up on a tree!