Big Mouth Bird is a walking toy bird from an unknown company. It appears to resemble a hornbill, but I'm not sure what type. The illustration on the box appears to depict a yellow-billed hornbill, though.
This bird has a large orange beak, orange feet, brown eyes, and it's mostly covered in black feathers. Its tail and wings fade out from black to white, near their tips.
Aside from walking and turning its neck, the box claims it has "Dulcet Singing". Don't know if this implies it makes bird sounds or if it actually sings.