Here are the corrections found in the text along with their explanations:
1. "Last night we used to watch a film" -> "Last night we were watching a film" ("used to" is for habitual actions, while "were watching" suits the past continuous context).
2. "Then we hear another sound" -> "Then we heard another sound" (maintain the past tense consistency).
3. "in the corner we were seeing a parrot" -> "in the corner we saw a parrot" (use simple past here instead of past continuous).
4. "while it's flying through our house" -> "while it was flying through our house" (maintain past tense).
5. "rang the neighbour" -> "called the neighbour" (more appropriate verb choice for modern English).
6. "I was thinking parrots were boring pets" -> "I thought parrots were boring pets" (simplify the verb choice for clarity).
Each correction aligns with grammatical rules and improves clarity and accuracy.