Generally, you must be 14 years old to work in Oregon. However, you may need to be older depending on the type of position for which you are applying and the set up of the business. See here for more information from the state website about employing minors: http://www.oregon.gov/BOLI/WHD/CLU/Pages/W_CLU_Taminors.aspx.
Quick Answer. According to Bio Kids, baby robins leave the nest about 2 weeks after hatching. After leaving the nest, which is called fledging, baby robins at first stay on the ground, close to their parents. The chicks are able to sustain flight about 2 weeks after fledging.
Bluebirds can fledge (leave the nest) anywhere from 16 to 21 days after hatching. When the birds get close to leaving, you can see them poking their heads out from the entrance hole of the bird house. It's important to NOT open the nest box when you are within 5 days or so of fledging.