A Wildlife officer tells them to clear an area where the skeleton was found because it is migratory habitat for the masked booby. They are not native to that area, aren't migratory , and aren't forest birds. They are sea birds.
Traces of aviation gasoline are traced to the sports car it has used in. Such fuel is specifically designed for the conditions plane engines operate in, so it is hardly suitable for ground vehicles, and using it in cars usually leads to performance issues and severe engine damage, especially in a fine-tuned sports car.
On several occasions, when Booth and Brennan are in the car, the scenery can be seen moving from the front of the car towards the back (as if car is moving forwards) when Booth is on screen, but from the back towards the front (as if car is reversing) when Brennan is on screen.
When Booth uses the card to get onto Dupont Circle the camera crew is reflected on the car doors.
Booth used his tie to collect some gasoline from the car without having a search warrant. This illegally obtained evidence would not be admissible in court and would likely make prosecution impossible.
No one can tell what gauge shotgun is used by the lead pellets lodged in the spine found in the fire pit in the woods just by looking at them.
Hodgins mispronounces "catalytic converter" as "catalyktic converter".