Question

why does the poet make an allusion of albatross ( Snake)

Answer 1

The poet makes this reference to express his guilt and regret for throwing a wooden log at the snake. Expression 'albatross round your neck' means you are regretful for doing something bad. The poet regretted because he had acted instinctively. The snake had just come to drink water at his water trough.

Answer 2

because the sailor kill the albatross and felt guilty and poet same do like that sailor