They certainly are Dave!!!!!!!!!!!
Here's some info. :
http://www.bringbackthecranes....
And on this page you see a link where they ask you report sightings:
http://www.bringbackthecranes....
It would be really cool for you to report yours along with the photos. Those aren't just tags it looks like they have antennas for tracking.
GOOD JOB DAVE!!!!!!!!!!!!!!!!!!!!