Left over wood
Left over paint
Screws or nails
Step 1: The Legs
Put two long branches into the ground. Peel the bark of with a knife.
Step 2: The Body
Choose a curved branch for the neck. Use left over wood for the body. Screw or nail the pieces together.
Step 3: Assembling
Assemble the legs with the body. Use screws or nails.
Step 4: The Wings
Add wing shaped pieces.
Step 5: The Feathers
Cover the body with feathers made of left over wood.
Step 6: The Head
Cut pieces of wood into suitable shapes to form the head and the beak.
Step 7: The Colour
Use left over paint to make the trash bird become alive.
Step 8: Examples
I guess you can create all kind of birds... or come up with some new species.