birds and babies Flashcards
plant communication
trees communicate with each other by using underground networks of fungal mycelia
microbial bacteria
communicate with each other to find the optimal time to attack the victim by sending out signalling molecules
bee communication
communicate to inform their colony mates about food sources
language is
complex , flexible and powerful
two major approaches
study the capabilities of closely related species- even if they don’t communicate in days similar to us
study the communication systems of animals who do communicate in ways similar to us
divergent evolution
process by which an interbreeding species diverges into different descendent species
convergent evolution
evolutionary dissimilar species independently evolve analogous structures to adapt to their habitat
language learning experiemtns in apes
viki the chimp
raised in a family as a human infant - only produced 4 words
washoe
sign language
350 signs learnt
nim chimpsky
taught sign language
25 signs
koko
taught sign language
produced 1000 signs
conclusion of ape studies
mixed results - low validity and reliability
natural communication in monkeys
referential alarm calls
different type fo calls for when they see a predator eg seaport , eagle or snake
gestural communication in chimps
66 gestures to communicate 19 specific messages
apes have
high cognitive and social abilities
vocal learning is a
rare trait - appears independently in 8 animal groups Bia convergent evolution
vocal learning
ability to change ones own vocalisation based on auditory output
bird song
both form regional dialects
important for social function
learning by imitation
social function of Bird songs
mating territorial degree babies for food identification convergence- song type matching dueting
song organisation
smaller units organise into larger units
song imitation
birds learn to sing by imitating adults
what happens to a vocal learner when theres nothing to imitate
improvise an isolate song
do songs and language develop in similar way
songs become more structured and less variable
humans infants
reduplicated babbling - monotone and repetitive
variegated babbling - more varied