Mars: Hellas Planitia. The largest visible impact crater in the Solar System is Hellas Planitia on Mars, a giant depression with a floor over seven kilometres (4.3 miles) below the Martian surface.
Dimensions. The recommended size for one parakeet is 25 inches tall and 25 inches deep. To house two birds comfortably, you should double that cage size to make it at least 50 inches tall and 50 inches deep.If you can afford it and have enough space, opt for a bigger cage.all cages work best for parakeets. This type of bird really likes to fly around and hop from place to place. If you can, choose a cage that exceeds the height recommendation of 50 inches.
Baby female parakeets usually have a white ring directly around the nostril, then a little bit of yellow, and as you continue to look even father from the nostril holes it is a light blue. Baby male parakeets usually have pink-purple cere. Note: the older the baby parakeet is the easier it is to tell its sex. You can tell at about 4 weeks old. Also another way to help you sex a baby parakeet is itâs attitude. Male parakeets are almost always nicer than female parakeets.