From The Daily Citizen:
Have you seen a bird with a fat tick stuck to its face? If so, the University of Georgia would like to know about it. In fact, you can participate in a research project by donating the ticks to UGA. […]
Interestingly, if the ticks are removed before the bird develops breathing problems, all these effects will quickly be reversed and the bird will recover and be fine.
If you want to attempt to rescue the bird, recommendations are that you wrap the animal in a towel to keep it from struggling. Pick the ticks off, examining under the feathers carefully to be sure all have been removed. Avian rehabilitators suggest then placing the animal in a large paper bag or box for a few hours to allow it to recover before it is released in the wild, where it might be at a disadvantage if it encountered predators before regaining flight ability.
Full article here.