Trumpeter swan which is apparent even when the swan is not standing or swimming upright) and larger, wedge-shaped bill as compared to the tundra swan. Trumpeter swans have similar calls to whooper swans and Bewick's swans. They are loud and somewhat musical creatures, with their cry sounding similar to a trumpet, which gave the bird its name. Beginning in 1968, repeated in 1975, and then conducted at 5-year intervals, a cooperative pan-continental survey of trumpeter swans was last conducted in 2015. The survey assesses trumpeter swan abundance and productivity throughout the entire breeding ranges of the three recognized North American populations: the
Silver Bird (Tina Rainford song) Silver Bird (Tina Rainford song) "Silver Bird" is a song by Tina Rainford, the title track of her 1976 LP. It was recorded in both German and English, with both renditions becoming hits in multiple nations. The German version became hit in central Europe during the fall of 1976, reaching number five in Germany and Austria. The song did best in Switzerland, where it reached number two. The English version was a hit in Australia, where it reached number 30 in 1977. It also reached the Country charts of the U.S. (#25) and Canada (#28) in mid-1977. "Silver Bird" was