Ava observes that a certain species of bird follows behind a herd of cattle. The bird species primarily eats insects. The birds stay with the herd of cattle as they graze.What is a scientific hypothesis that Ava could formulate based on her observations? A. The birds are happier around big herds of cattle rather than small herds. B. The birds follow the herd because the cows stir up insects for the birds to eat. C. Do the birds get any benefit from following the herd of cattle? D. Why does this species of bird follow herds of cattle?

A student observes bird behavior in response to different songs. A hypothesis the student forms is Birds like songs because they sound pretty. True or False: The hypothesis "Birds like certain songs because they are pretty to listen too" is testable.

A farmer is struggling to control the population of a certain insect on his farm.  After researching population control techniques, he discovers that a particular bird is a predator of this insect.  The farmer purchases a number of these birds and releases them onto his farm.How might the farmer's action most likely have a negative impact on the ecosystem?ResponsesThe birds will increase biodiversity of native plant species.The birds will increase biodiversity of native plant species.The birds will pollinate native species, increasing genetic variation.The birds will pollinate native species, increasing genetic variation.The birds will consume beneficial insects, as well as the pest species.The birds will consume beneficial insects, as well as the pest species.The birds will mate with native birds and create a new species

10.  Classify the ecological interactions described:  The population of birds getting the same food in a small pond.

Farmers in a community were concerned about the growing pest population. Animals, such as rabbits, mice, grasshoppers and birds, were feeding on their crop plants. The farmers introduced a population of hawks into the farm ecosystem to help control the pest population. The diagram below shows the farm's food web after the hawks' introduction. Give a reason why the hawk was chosen to control the pest population.

The following behaviors help birds increase their reproductive success in different ways. Which one most directly increases a bird’s chance of mating?Choose 1 answer:Choose 1 answer:(Choice A)   An arctic tern migrates from an area of low resources to an area of high resources.AAn arctic tern migrates from an area of low resources to an area of high resources.(Choice B)   A killdeer bird pretends to be injured to distract and lead predators away from its nest.BA killdeer bird pretends to be injured to distract and lead predators away from its nest.(Choice C)   A male bird-of-paradise dances to attract the attention of a female.CA male bird-of-paradise dances to attract the attention of a female.