You can find here the pattern for a stork, grey heron and a crane.
You can crochet all three or make your own bird with the pattern.

The pattern consists of 12 pages with explanations and pictures and can also be done by lefthanders and beginners.

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You need to know basic knowledge in crocheting:

magic ring
stitch
slipstitch
chain
single crochet
half double crochet
double crochet
increase
decrease
working in back loops only
row
round

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What you will need:
Yarn: Use the colors and size you prefer and the matching crochet hook.
I’ve used crochet hook in 2.5 and various Schachenmayr Catania yarn:

Stork:
105 white
115 red
110 black

Gray heron:
434 light gray
435 gray
429 dark gray
179 light brown

Crane:
435 gray
429 dark gray
434 light gray
105 white
115 red

Soft stuffing
Wire / Pipe cleaner
A pair of 6 mm safety eyes (if you choose another yarn, you will perhaps need different eyes)
A needle and some black yarn for embroidering, sewing pins, scissors, stitch marker (optional)

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With hook size 2.5 each of the bird will be around 11 cm tall, 11 cm long and 3 cm wide.