Superbowl
For owls that are superb.
US Wild Animal Rescue Database: Animal Help Now
International Wildlife Rescues: RescueShelter.com
Australia Rescue Help: WIRES
If you find an injured owl:
Note your exact location so the owl can be released back where it came from. Contact a licensed wildlife rehabilitation specialist to get correct advice and immediate assistance.
Minimize stress for the owl. If you can catch it, toss a towel or sweater over it and get it in a cardboard box or pet carrier. It should have room to be comfortable but not so much it can panic and injure itself. If you can’t catch it, keep people and animals away until help can come.
Do not give food or water! If you feed them the wrong thing or give them water improperly, you can accidentally kill them. It can also cause problems if they require anesthesia once help arrives, complicating procedures and costing valuable time.
If it is a baby owl, and it looks safe and uninjured, leave it be. Time on the ground is part of their growing up. They can fly to some extent and climb trees. If animals or people are nearby, put it up on a branch so it’s safe. If it’s injured, follow the above advice.
For more detailed help, see the OwlPages Rescue page.
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Yes, they are checked very frequently. There is a ton of licensing and permitting required, so the researchers wish to steer clear of trouble. Mist nets are very regulated, as they are used for poaching as well.
They are sized for different animals, and the birds will be lured with a call into the net, where they bounce off and get caught in a pocket. They're then retrieved and taken to a station to be measured and banded.
You can see my previous write up here, or there is this page all about mist nets.