Also:
http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4099020
http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=1640087

"FalconTrak is an ongoing research project initiated in 2002. A total of 23 transmitters have been placed on young peregrines, however only 6 falcons are currently being tracked."

Example applications: "HeartCycle" and "SensaPill"

"A ScatterWeb powered wireless network is ideally suited to develop solutions in:
- Supply Chain Management / Asset Tracking / Logistics
- Container Tracking and Security
- Automated Meter Reading (AMR) / Industry Automation
- Geographical Information Systems (GIS)
- Facility Management
- ZigBee and RFID interoperability"

For the "Example Applications" section.

"In today’s competitive business climate it is no longer a matter of your product competing against someone else’s. It is also your supply chain competing against someone else’s. If you ship high value products, you need to minimize your exposure to theft. If your product does not get delivered, your customer may buy your competitor’s. The same can be said about products that are vulnerable to environmental conditions, such as temperature and shock, or that can not be tilted beyond a certain degree.  If your shipment is compromised or damaged while in-transit the first notification you will receive is from an irate customer. Crossbow provides shipment tracking and visibility solutions that allow you to maintain close surveillance on the location and more importantly the condition of your shipment. In-transit alerts mean you have time to react and can manage by exception. So, if you are shipping product to meet your customer’s ad date, if you are shipping items to keep a manufacturing line running, if you are shipping an expensive, built-to-order piece of equipment, Crossbow provides you the most detailed status and condition of your shipment."

"Crossbow’s asset tracking solution is unique in providing customers with instant global monitoring capabilities while requiring very little initial investment. This is accomplished by combining a variety of established technologies with state of the art hardware and software development. The following list describes some of the key technologies used:
- GPS/AGPS worldwide location tracking with special provisions for orientation independent GPS reception
- GSM/GPRS worldwide cellular radio communication
- GSM based worldwide location tracking in GPS denied environments
- Environmental sensor suite to monitor acceleration, temperature, humidity, and other conditions
- Ultra low power system processor to enable long battery life"

Also have a look here (same copy): http://www.xbow.com/asset-tracking/technology/index.html

A live example

Very-very handy.