Here are a few general characteristics to consider:
Color: Male birds often exhibit brighter and more vibrant colors, while female birds may have duller or more muted coloration. This is because male birds use their colors to attract females during mating.
Pattern: Look closely at the bird's feathers. Male birds may have more distinct and intricate feather patterns, while females might have simpler markings.
Size: In some species, males might be larger than females, but this is not always the case.
Head Shape: Certain species may have differences in the shape of the head between males and females, with males having more pronounced or distinctive features.
Behavior: Male birds are typically more vocal and may display courtship or territorial behavior.
It's important to note that not all bird species exhibit these differences, and even within the same species, there can be variations in appearance between individuals. If you want to determine the sex of your baby bird with certainty, it's best to consult with an experienced bird expert or consult with a veterinarian specializing in avian medicine. They can help with genetic testing or provide a more accurate assessment based on your bird's specific species and characteristics.