Carl the Collector Episode 10 The Sticker Collection/The Baby Stuff Collection >Lotta has a sleepover at Carl's house. While talking about items they have had since they were babies, Carl notices that his baby blanket, named Knit-Knit, has a tear in it. Carl and Lotta try to find out who the culprit is, initially to no luck. After dawn, Carl and Lotta witness a bird pulling on a thread of Knit-Knit and carrying it to its nest. Lotta recognizes the bird as a Baltimore oriole, a species of bird that create their nests to be warm before laying their eggs. Carl gives the birds his feather collection for their nest. A few weeks later, the oriole's eggs have hatched and Knit-Knit has been repaired, with Carl taking comfort in his feather collection and some of Knit-Knit being in the oriole's nest.