is up for auction today. This Falcon, which is made of resin and weighs only about 5 pounds, was used during filming when Bogart or others had to carry the statue as the two main Falcon's were made of lead and weighed nearly 50 pounds. This lighter bird was also used in the iconic publicity photos for the film with Bogie and the bird.
This falcon was discovered at a NJ yard sale back in 1991 by a film producer who noted the Warner Brother's serial number on the bottom and set out to research its provenance. High resolutions scans of the press photos and of the bird in question showed similar bubbles in the plastic which confirmed the authenticity, along with some interviews with people who worked on the film who were still alive.
If you're interested, the bird will probably go for a cool half million. Not bad for a legendary hunk of plastic!