A parakeet is any one of a large number of small to medium-sized species of parrot, in multiple genera, that generally have long tail feathers. Older spellings still sometimes encountered are paroquet or paraquet. Wikipedia
Wingspan: Monk parakeet: 48 cm
Lifespan: Budgerigar: 5 – 10 years, Monk parakeet: 15 – 20 years, Plain parakeet: 15 years
Mass: Budgerigar: 30 – 40 g, Rose-ringed parakeet: 130 g, MORE Encyclopedia of Life
Clutch size: Budgerigar: 4 – 6, Monk parakeet: 5 – 12
Length: Budgerigar: 18 cm, Monk parakeet: 29 cm, Sun conure: 1.2 – 1.5 m, Princess parrot: 46 cm