Feather development grows, its spathe, which is where the rachis and vanes attach, continues to form. When spathe is finished developing, the calamus begins to form within the base of the spathe. The calamus is the quill of the feather, which is the bottom portion that stays mainly within the pulp cavity. From there, the feather is fully developed and will remain as such until molting occurs, causing it to fall off. Feathers fall off during molting, which occurs in the at different times through the year depending on the type of bird. Birds can molt for seasonal, reproductive and many other
A Bird in a Gilded Cage instead of love. Its lyrics are as follows: Bing Crosby included the song in a medley on his album "On the Sentimental Side" (1962). Sylvester Stallone sings the song in his guest spot of "The Muppet Show". Malcolm McLaren produced, together with Bootsy Collins, a cover version of "Bird in a gilded cage" in hiphop style as a bonus track for a release from his album Waltz Darling, The House of the Blue Danube. (1989). Kristin Chenoweth sings the song as Lavinia Peck-Foster in season 2 episode 2 of "Trial & Error". A Bird in a Gilded Cage "A Bird