Sorry mate but

thats probably the funniest thing Ive read all day allthough Im sure at that time it wasnt as funny maybe even a little scary. Ive never heard of any birds acting like this for no apparent reason. Was there perhaps a outcropping or island nearby where the bird mite have been nesting or perhaps she or he was busy teaching the chicks to dive and hunt and was protecting its young as that could quite possibly be the only reason for birds attacking possible predators in such a aggresive way.
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Dive safe and shoot straight
- Hénré -
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"Thinking is the hardest work there is, which is probably why so few engage in it"
- Henry Ford -