Tomorrow and Sunday from 1 to 4 p.m., a science workshop on the dietary needs and beak shapes of birds in the neighborhood.

The role of beak shape in octopodid taxonomy.

The hummingbird itself will choose the plants its feeds from based on its beak shape, its perch on the plant, and its territory choice (Linhart 1973).

Aug 2006 Nature Article that shows how modulation of a certain gene during development can account for the differences seen in beak shape.

The golden kiwi (A. chinensis) has a smooth bronze skin, with a beak shape at the stem attachment.

Scientists had assumed that the dramatic alterations in beak shape, height, width and strength would require the accumulation of many chance mutations in many different genes.

All members of the psittaciformes order have a characteristic curved beak shape with the upper mandible having slight mobility in the joint with the skull and a generally erect stance.

The beak of each species is suited to the food available in its particular environment, suggesting that beak shapes evolved by natural selection.

A bird's ability to consume feed is impaired following beak trimming because of the new beak shape and pain.