âº a gradual process of change and development. âº biology Evolution is the process by which the physical characteristics of types of creatures change over time, new types of creatures develop, and others disappear. (Definition of âevolutionâ from the Cambridge Academic Content Dictionary Â© Cambridge University Press)
You can remember the difference between endotherms and ectotherms if you remember that endo- means inside endo- = inside and ecto- means outside ecto- = outside, so endotherms generate their own heat from within, and ectotherms get their heat from the outside.
Even though your cockatiel is a warm-weather bird, she cannot withstand extreme heat any better than she can tolerate extreme cold. Never leave a cockatiel in a car, even when the weather is temperate outside, for instance. If you take the cage out on the patio during the spring or summer, don't place her in a spot with direct sunlight. Doing so can put her in danger of overheating, dehydrating and possibly dying.