A rule of thumb for Eastern Bluebirds is that eggs will hatch 17 days after the first egg is laid.Nestlings remain in the nest 17â21 days before they fledge.Remove bluebird nests and those of other birds as soon as the young birds have fledged.
Another common standard classical quartet is the piano quartet, consisting of violin, viola, cello, and piano. Romantic composers Beethoven, Brahms, and Mendelssohn each wrote three important compositions in this form, and Mozart, DvoÅÃ¡k, and Gabriel FaurÃ© each wrote two.
A string quartet would not be a string quartet without at least one cello; and a string quintet would not be a string quintet without at least one cello. 1  The most common string quartet is composed of a first violin, second violin, cello, and viola, with the cello positioned in the center.