Uh, no, not a bird thing. Whooping cough is the common name given to Pertussis (Bordetella pertussis).
Pertussis is a highly contagious bacterial disease that causes uncontrollable, violent coughing. The coughing can make it hard to breathe. A deep "whooping" sound is often heard when the patient tries to take a breath. It is fairly uncommon in the US now because of widespread immunizations against it, but outbreaks still occur but are generally localized (such as the Sarasota County, FL, Buchanan County, IA, outbreaks in 2009, and several across the US in 2004).
About 90% of the outbreaks that occur are in 3rd world countries these days. However, before immunizations, large outbreaks occurred in the US as they continue to occur elsewhere. Even with immunizations outbreaks still occur. Major outbreaks occurred in Canada in 1991, Germany, Finland, and France in 1997, and in Australia in 2009.