Birds: The Best Beak A look into the adaptations that help get birds the food they need. An LSU Museum of Natural Science presentation to accompany the activity
Bird adaptations- Beaks The most important function of a bird bill is feeding, and it is shaped according to what a bird eats. You can use a beak shape to: • Identify a bird • Identify behavior and think about what it eats.
Common bill shapes • Cracker • Shredder • Probe • Chisel • Strainer • Spear • Tweezers
Pelican -The pelican has a long beak with a hooked tip and a huge pouch. -The pelican’s pouch is used as a dip net to catch fish. Pelecanus erythrorhyncho -The pouch can even stretch to hold up to two gallons of water!
Wood Duck -Wood ducks have broad, flat bills with rows of fine notches along the edge. -They eat plants, seeds, grasses and other small insects and animals that they find on or under the water. Aix sponsa
American Robin -American robins search the ground for insects and berries. -They most commonly eat earthworms, grubs, butterflies, cherries, and blueberries. Turdus migratorius
Sparrow Zonotrichia albicollis -Though sparrows generally prefer to eat seeds with hard shells, sometimes they also eat flowers, insects, spiders, and berries. -Sparrows look for food on the ground or in low bushes. They sometimes even fly up to catch insects in flight.
Louisiana Heron -Herons and egrets eat fish, crustaceans, and insects using their beak much like a spear. They often stalk their prey in shallow water, often running or shuffling their feet, flushing prey into view. Egretta tricolor
Hummingbird -Hummingbirds have long beaks that are essential for reaching into long, tubular flowers to gather nectar. Archilocus colubris -Hummingbirds’ beaks are also used to clean their feathers and to build their nests. Selasphoprus rufus
Example of data table for amount of food collected at station with utensils (beak-type).Exemple de tableau à double entrée: quantité de nourriture collectée pour chaque atelier, avec les ustensiles (=type de bec)