A famous 550-pound bear moved under a home in Los Angeles again. The black bear entered a crawlspace, which is a small empty space under the floor of a house.
which is...= 直前に出てきた名詞についての補足説明や定義を付け加える表現
The homeowners saw the bear on their security cameras. They tried to scare the bear away with loud music and a leaf blower. The bear broke air pipes under the house to make a resting spot. However, he later left the home on his own.
on his own= 他人の力や強制によらず、自分自身の力で
This is not the first time the bear lived under a house. He lived under another nearby home for two months last year. In January, volunteers used paintball guns to make him leave.
This is not the first time...= ある出来事や行動が過去にも起きたことがあることを表す表現
Wild animals often move into towns when fires destroy their forest homes. Bears also look for extra food in late summer before winter. Experts say black bears rarely attack people.