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Flamingos
series of projections, or lamellae, to filter tiny food items from debris in the water
Swifts
wide gape to help capture flying insects.
Eagles
hook-like bills to tear apart large prey
Shovelers
spatula bills to filter food from mud and water
Crossbills
extract seeds from pine cones
Herons
spear fish and amphibians
Avocets
sweep bills side to side to capture small inverts
Woodpeckers
chisel-like bills to chop away wood & expose insects and insect larvae.
Wrens
thin, probing bill to capture small insects.
Curlews
probe mudflats
Hawfinches
crack open hard seeds
Macaws
use strong hooked bill to crack nuts
Mallards
bills to filter small invertebrates from mud and water
Skimmed
elongated lower mandible to skim surface of water
Marine Gliders
very high aspect-ratio wings; average or low wing loading
Divers/swimmers
medium to high aspect ratios; high wing loading, These birds fly rapidly, but with limited maneuverability
Aerial hunters
high aspect-ratio wings; low wing loading; rapid flight and excellent maneuverability (swallows, nightjars, terns)
Soarers/coursers
low aspect ratios; low wing loading soar or fly just above the vegetation in open habitats in search of prey (hawks, condors, storks, cranes)
Short-burst fliers
low aspect ratios; high wing loading fly infrequently and only for short distances (turkeys, tinamous, grouse)
Hoverers
flying in one position without wind high aspect ratios; high wing loading