Trumpeter swan the park which have not mated in years. Scientists attribute the loss in the park's population to the loss of nests and nesting sites because of spring flooding caused by climate change. Trumpeter swan The trumpeter swan ("Cygnus buccinator") is a species of swan found in North America. The heaviest living bird native to North America, it is also the largest extant species of waterfowl with a wingspan that may exceed . It is the American counterpart and a close relative of the whooper swan ("Cygnus cygnus") of Eurasia, and even has been considered the same species by some authorities.
Pale-winged trumpeter species, the ochre-winged trumpeter ("P. ochroptera"). The reproductive behavior of the nominate subspecies of the pale-winged trumpeter is the best known of all the trumpeters'. Groups of adults defend a territory together. Several males mate with the dominant female, the dominant male doing so most often. She lays an average of three eggs in a hole in a tree, where both males and females incubate. The young hatch covered with thick, dark, cryptically patterned down. Soon afterwards, they jump down to the ground and follow the adults. Their call is a loud staccato trumpeting. Pale-winged trumpeter The pale-winged trumpeter ("Psophia