Organisms can use different strategies to increase their reproduction rate. Altricial organisms are helpless at birth, and their parents give them a lot of care. This care is often seen in bird species. ( Figure below ). Altricial birds are usually born blind and without feathers. Compared to precocial organisms, altricial organisms have a longer period of development before they reach maturity. Precocial organisms, such as the geese shown below, can take care of themselves at birth and do not require help from their parents ( Figure below ). In order to reproduce as much as possible, altricial and precocial organisms must use very different strategies.
Kangaroos and most snakes have very different ideas about parenthood. Some snakes protect their eggs but the young are usually left to fend for themselves as soon as they are born. Kangaroos on the other hand carry their young in their pouches caring for them for 11-18 months.
Which animal is a Precocial organisms?