He said the injuries were likely caused by Goldman flailing around while under attack, striking tree branches and stumps in the small, partly enclosedarea where he died.
Authorities said Mr. Sen was trying to stay warm in an enclosedarea of the elevated station and didn't notice his attacker before he fell on the tracks.
They recommend a minimum floor area per bird, in enclosed housing, of 0.026 square metres per kilogram - a maximum stocking density of 40kg per square metre.