IELTS-G 13 Listening test 1 section 4

the 31 – because of its general adaptability

the pigeon – because walls of city buildings are similar to 32

In fact, many urban animals are adapting with unusual 33

She found the size of their 34 had increased.

She suggests this may be due to the need to locate new sources of 35 and to deal with new dangers.

Catarina Miranda focused on the 36 of urban and rural blackbirds.

She found urban birds were often braver, but were afraid of situations that were 37

He found that some animals respond to 38 by producing lower levels of hormones.

Sarah Partan’s team found urban squirrels use their 39 to help them communicate.

Species of animals may develop which are unique to cities.However,some changes may not be 40