Culmen- Upper ridge of a bird's bill.

Deity- God or supreme being.

Ecosystem- Community of interacting organisms in their physical environment.

Fictitious- Not real or imaginary.

Heterotroph- Organism that obtains nutrients from complex proteins of other organisms.

Incubate- To sit on eggs to provide heat and promote embryonic development.

Juvenile- Young or adolescent.

Molt- To periodically shed feathers; they are then replaced by new growth.

Monogamous- Having one mate.

Paraphyletic- Consisting of some, but not all descending members of a common ancestor.

Plumage- Complete feather covering of a bird.

Synapomorphy- Trait shared by two or more taxa of a common ancestor.

Terrestrial- Land.

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