* Ceres (the area above the beak): Males typically have a bright blue or purple ceres, while females usually have a pale blue, tan, or white ceres.
* Size: Males are generally slightly larger than females.
* Behavioral traits: Males are often more vocal than females and may be more aggressive during courtship and mating season.
* Nesting behavior: Males may be more likely to engage in nest-building behavior, such as carrying nesting materials and arranging the nest.
Female lovebirds:
* Ceres: Females typically have a pale blue, tan, or white ceres.
* Size: Females are generally slightly smaller than males.
* Behavioral traits: Females may be less vocal than males and may be more submissive during courtship and mating season.
* Nesting behavior: Females may be more likely to engage in egg-laying and incubating behaviors.
It's important to note that these are general guidelines and there may be some variation among individual lovebirds. If you're unsure about the sex of your lovebird, it's always a good idea to consult with a veterinarian or an experienced bird breeder for accurate sex determination.