BrickLink - Part 2546p01 : LEGO Bird, Parrot with Small Beak with Green and Yellow Feathers, White Face and Yellow Beak Pattern [Animal, Air] - BrickLink Reference Catalog
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Review: LEGO Ideas 21301 Birds - Jay's Brick Blog
Review: 21301 Birds | Brickset: LEGO set guide and database
Birds is the word | New Elementary: LEGO® parts, sets and techniques
Birds is the word | New Elementary: LEGO® parts, sets and techniques