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Learning & Intelligence
Gruiformes Cranes, rails and allies 11 families (3 N Amer), 7 with 1-3 species 212 species Many are marsh-dwelling rails Standing 5 ft tall, Sarus is tallest crane. Still common in N India where they are the symbol of a happy marriage. The fifteen species of cranes constitute one of the most endangered families of birds in the world. Cranes have also played an important role in the rise of the international conservation movement. In particular, the recovery of the Whooping Crane from near extinction has provided strong impetus to the conservation movement, and has opened the eyes of many people to the steep price that we pay for ignoring the damage we cause to the natural world. The establishment of the International Crane Foundation (ICF) in 1973 and of Crane Working Groups in countries and regions around the world has stimulated unprecedented interest in cranes among specialists and the broader public in countries with diverse political and economic systems — including the USA, the former Soviet Union, Japan, China, South Korea, India, Iran, South Africa, and Australia. Thanks to the active programs of ICF, cooperative programs for the conservation of cranes have been initiated among many of these countries. Sarus Crane
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Cranes, family Gruidae, are one of the most endangered bird families.
Sarus Crane is tallest flying bird at 5’ 15 crane species International Crane Foundation of Wisconsin 1973 The Sarus Crane is the only resident breeding crane in India and southeast Asia, and is the world’s tallest flying bird. Three subspecies are recognized, with a total estimated population of between 13,500 and 15,500. The Indian Sarus Crane (G. a. antigone) is still common in northern India, but has been extirpated from large portions of its historic range and continues to decline in areas where it still exists.
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Gruidae, all continents except S Amer
Gruidae, all continents except S Amer. 15 species International crane foundation
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Audio tape of Whopping Cranes calling.
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Sandhill Crane
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Among the heaviest flying birds, 35 lbs (16 kg)
Otididae Bustards Old World Terrestrial 26 species Among the heaviest flying birds, 35 lbs (16 kg) Kori Bustard, African, omnivore eats mainly insects especially locusts and thus are secondarily poisoned. In Namibia the kori bustard is hunted and known as the Christmas turkey. Most bustards are in decline and several species are endangered. Kori Bustard
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Worldwide distribution
Rallidae Worldwide distribution 132 species Secretive Marsh-dwelling King rail largest N Amer rail. Call often likened to a rider or teamster clucking to horses. Illinois farmers nicknamed it the stage driver. King rail is east of great plains. Family includes rails, coots and gallinules. King Rail
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Worldwide distribution
Rallidae Worldwide distribution 132 species Secretive Marsh-dwelling King rail largest N Amer rail. Call often likened to a rider or teamster clucking to horses. Illinois farmers nicknamed it the stage driver. King rail is east of great plains. Family includes rails, coots and gallinules.
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Virginia Rail, a California species
Other CA rails include: Black, CA Clapper,light-footed clapper and Yuma Rail, all of which are endangered. Virginia Rail, a California species
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Virginia Rail, a California species
Audio tape of Virginia Rail calling. Virginia Rail, a California species
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Eurypygidae Sungrebe Pantropical 1 species
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Sungrebe
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Aramidae, neotropics, Limpkin (1 species)
Florida Aramidae, neotropics, Limpkin (1 species)
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Psophiidae Trumpeters S America, 3 species Pale-winged Trumpeter
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Rhynochetidae, 1 species the Kagu, New Caladonia
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Cariamidae Seriemas, 2 species, S America, Red-legged Seriema
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Navigation summary Some birds are capable of map & compass (bicoordinate) navigation Some birds can use the sun, stars & Earth’s magnetic field as a compass Other means of navigation?
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What Nazi science tells us about bird navigation
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Cardiac Conditioning
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Cardiac Conditioning Polarized & ultraviolet light
Atmospheric pressure changes as small as 10 mm water = 10 m Δ altitude Infrasound 0.06 Hz (man 20-20K Hz)
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Learned or Innate? Intelligent or reflexive?
Bird behavior Learned or Innate? Intelligent or reflexive?
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Learning v Intelligence
Learning is the adaptive modification of behavior as a result of experience. The degree to which a given behavior is modifiable by experience is broadly a measure of learning. Intelligence is perception, or discernment; the quality of knowing or understanding.
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Characteristics of Innate Behavior
Highly stereotypical, ritualized Triggered by specific stimuli termed “releasers” Does not appear to involve awareness or intelligence
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Examples of Innate Behavior
Cardinal feeding goldfish Nestlings begging Motmot avoidance of coral snakes Aerial predators Oystercatcher rolling egg Laughing gull feeding chick Lovebird nest-building behavior
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Turquoise-browed Motmot
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Coral Snake “Red around yellow, deadly fellow”
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Response to displaced egg
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Super sign stimulus
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Lovebird nest-building behavior
William Dilger Nest-building is innate (i.e., inherited) Nevertheless, subject to modification by learning Distinction between innate and learned behavior thus blurred
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African Lovebirds Fischer’s Lovebird Peach-faced Lovebird
Peach-faced: Namibia, Angola, & Botswana. Fischer’s: Tanzania Peach-faced Lovebird
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Peach-faced Fischer’s Hybrid
Peach-faced (1 top) carries material several strips at a time in its plumage. Fischer’s carries one strip at a time in its bill. Hybrid exhibits confused behavior. Hybrid took 3 years to prefect bill carrying technique
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Associative (trial and error)
Learning: IV types Habituation Associative (trial and error) Insight Imprinting
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Habituation Learning not to respond to meaningless stimuli
Waning of a pre-existing response as a result of lack of reward or punishment Chaffinch – live owl example
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Alarm calls of Chaffinches to live owl
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Associative learning By chance, a given behavior leads to reward or punishment Examples 1) Refinement of pecking accuracy 2) Learning to tell palatable from unpalatable food
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Laughing gull
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Seeing through a problem to its solution (Eureka!)
Insight Seeing through a problem to its solution (Eureka!)
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Insight Learning
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Imprinting Extremely rapid, abrupt, irreversible form of learning
Often confined to a very brief and definite “critical period” in a bird’s life Requires neither reward nor punishment Konrad Lorenz: precocial chicks become attached (imprint) on the first large object they see and follow it
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Nobel Prize for Medicine in 1973 w/ Nikko Tinbergen.
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Imprinting Much studied in waterfowl and chickens
Common in precocial species including coots and bitterns Some altricials – owls, ravens, doves, and some finches
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Hess -- ducklings Science circa 1954
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Ducking exposed to model of male mallard with a loudspeaker which played a human imitation of the adult mallard’s “gock” cal, gock, gock, gock. Duckling released, speaker started after a short interval model moved. Imprinting period lasted 10 min.
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Duckling placed midway between male and female models
Duckling placed midway between male and female models. After a min sound turned on, female speaker played sound of a actual female mallard calling her duckling, male made the human gock, gock sound. If the duckling moved towards the male model its responses was scored as positive.
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Peak at about 16 hours post-hatch
Effort increases degree of imprinting
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Forms of imprinting Critical period Filial (on mother) 1st day
Ecological 2nd day Food 3rd day Sexual partner days to weeks Song weeks to a year
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Learning & Intelligence
Next lecture
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READINS FOR AVS 170 Pepperberg, IM Avian cognitive abilities. Bird Behavior 14:51-70. Ricklefs, RE The cognitive face of avian life histories. Wilson Bull. 116: Emory, NJ Cognitive ornithology: the evolution of avian intelligence: Phil. Trans. Royal Soc. 361:23-43.
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