PCR & Rapid Antigen Testing for COVID-19. Hummingbird is a subsidiary of Discovery Health Services. In business since 2002 and providing wellness services since 2006, Hummingbird was at the center of the H1N1 response and received 400,000 doses of that vaccine to administer to the public. Testing is something we’ve always provided to our corporate clients and we are applying our experience, knowledge, and expertise to serve our communities through Hummingbird.