One very cool thing: I have many black vultures that have been visiting us for years. Yesterday, we had a newbie with a green tag with a number. These wing tags are used to track these birds. This bird came from about 80 miles west from where I live. Just amazing! So far, we have had birds with yellow tags and one with a red tag which was from a government facility in Baltimore. But, the numbers were faded preventing me from providing them an identification number. But, nonetheless, these are God's creations, and I enjoy learning about them!