It takes 26 pounds of pressure to break a swan's egg and 120 pounds to smash the egg of an ostrich. Finding a place to safely place and hatch their eggs, and raise their young to the point of independence, is a challenge birds have solved in many clever ways. They use artistry, intricate design and complex engineering. The diversity of nest architecture has no equal in the animal kingdom.
1 The chicken breasts should be completely covered with the parchment.  Bake until the chicken is 165Â°F: Transfer the chicken to the oven until the chicken is completely opaque all the way through and registers 165Â°F on an instant-read thermometer. Start checking after 20 minutes; total cooking time is usually 30 to 40 minutes.
Bake the chicken breasts in the oven for about 35 to 45 minutes. If the juices from the chicken are clear, it is fully cooked. If you have a meat thermometer, the internal temperature of the chicken should be 160Â°F (71.1Â°C). Another option is to cover the pan and chicken with tin foil. 2  Bake the covered chicken for 60 minutes. 3  Uncover the chicken and bake it for another 20-30 minutes, or until clear juices run from the meat.