Determining the age of a joey, a baby kangaroo or wallaby, can be done by observing its physical characteristics and behavioural cues. Here are some key indicators based on age:
1. Birth to 2 Months:
- Pouched: Joeys are born quite small and spend their initial months in their mother's pouch. Their eyes are closed, and they primarily rely on touch, smell, and hearing.
2. 2-4 Months:
- Emergence: As they approach 2-4 months, joeys start peeking out of the pouch for brief periods. They may have partially opened eyes, but their vision is still developing. They begin to move around inside the pouch, and you might catch a glimpse of their legs and tail.
3. 4-6 Months:
- Pouch and Outside: During this stage, joeys spend time both in the pouch and outside. Their eyes are fully open, and their vision is developing. They become more active, hopping around the pouch and sometimes clinging to their mother's fur while outside. Their ears start to become more erect.
4. 6-8 Months:
- Weaning: Around 6-8 months, joeys start the transition from relying solely on their mother's milk to grazing on solid foods. Their upper lip becomes pigmented and teeth begin to develop, allowing them to nibble on vegetation.
5. 8-10 Months:
- Independence: As they approach 8-10 months, joeys become increasingly independent. They spend less time in the pouch, exploring the outside world and learning to search for food. They show improved coordination, hopping more confidently and venturing short distances away from their mother.
6. 10-12 Months:
- Leaving the Pouch: By around 10-12 months, joeys usually emerge from the pouch for the last time. They continue to grow, develop their social skills by interacting with other joeys, and gradually learn how to navigate their environment.
Remember, these are general age ranges, and some variations can occur depending on the species and individual joey. If you're unsure, it's best to consult with wildlife experts or someone experienced with the specific species to determine the age accurately.