• Please use real names.

    Greetings to all who have registered to OPF and those guests taking a look around. Please use real names. Registrations with fictitious names will not be processed. REAL NAMES ONLY will be processed

    Firstname Lastname


    We are a courteous and supportive community. No need to hide behind an alia. If you have a genuine need for privacy/secrecy then let me know!
  • Welcome to the new site. Here's a thread about the update where you can post your feedback, ask questions or spot those nasty bugs!

Serious Bird

James Lemon

Well-known member

Asher Kelman

OPF Owner/Editor-in-Chief

This bird has a remarkable coat. It looks like the pigment is metameric. Are the other colors separate pigments or much of them appear differently with the angle of light?


Asher Kelman

OPF Owner/Editor-in-Chief
Yes the light has a big effect otherwise the bird would appear all black. Its a Common Grackle.

you are correct!

Creatures have amazingly well developed mastery of microscopic physical and chemical form in down to nano-structures to create color, lightweight support, cooling systems and other engineering marvels.

This bird is a wonderful ad for biotech!