My name is Michael Brown. I have been a bird-watcher since child…

My name is Michael Brown. I have been a bird-watcher since childhood. I have always enjoyed watching birds in my yard and identifying them by sight and sound. Yesterday, I happened to read an article about your club. I was surprised and excited to find out about a community of passionate bird-watchers who travel annually to go birding. (후략) 다음의 기준에 맞추어 이 지문 해석의 난이도를 종합하여 알려주세요. 1. 일상적이지 않은 단어, 2. 문장의 복잡성, 3. 배경지식의 필요성