1. Size and Shape:
- Darters are typically medium-sized birds, with a length ranging from 50 to 90 centimeters (20 to 35 inches).
- They have a long, slender body with a relatively small head and a long neck.
- Their wings are short and rounded, adapted for short-distance flights and gliding rather than sustained flying.
2. Plumage:
- Darters have dense, oily plumage that helps them stay dry and buoyant while swimming and diving.
- The color of their plumage varies depending on the species, with some common colors including brown, black, white, and gray.
- Many darter species have contrasting patches or stripes of different colors on their wings, heads, or necks.
3. Head and Beak:
- Darters have a relatively small head with a long, pointed beak.
- The beak is typically slightly hooked at the tip and has serrated edges, which helps them grip and hold onto slippery prey.
- Their nostrils are located on the top of the beak, allowing them to breathe while their head is submerged underwater.
4. Feet and Legs:
- Darters have partially webbed feet that are adapted for swimming and diving.
- Their legs are relatively short and strong, with long toes that help them perch and grip onto branches.
5. Tail:
- Darters have a moderately long tail that is often rounded or fan-shaped.
- The tail is used for steering and maintaining balance while swimming and diving.
Overall, darter birds are characterized by their long, pointed beaks, dense plumage, and partially webbed feet, which enable them to successfully pursue and capture aquatic prey in their habitats.