Sentence 1: Frank had a pet bird. 
 Sentence 3: It began flying through his house, scaring everyone 
 Sentence 4:  Suddenly, it stopped on his sister and pooped 
 Sentence 5:  Frank was able to catch it and put it back 
 Option 1: He was trying to feed it one day when it escaped the house. 
 Option 2: He was trying to feed it one day when it escaped its cage.