Lead Shot Toxicity in Trumpeter Swans
Article 1:
1. What percentage of the total population of trumpeter swans wintering in Whatcom County died from lead poisoning in 2002?
It was about 9% of the total population.
2. a. On average how many pellets are shot for each bird that is actually harvested?
About 1500 pellets for each bird.
b. How many shotgun shells are shot each year, on average?
About 732 million pellets for each year.
Article 2:
1. a. What percentage of the total population of swans over-wintering in Skagit Country, Whatcom County, and BC died from lead poisoning.
4% of the total population
b. How many trumpeter swans died from lead poisoning in 2001-2002? Round your answer to a whole number.
About 235 swans
2.a. What percentage of collared birds survived during the survey?
About 7.7%
3.a. How many pellets would be deposited in one acre after 20 years?
420 pellets
b. Calculate how much lead shot would have been deposited on a typical acre of huntable land in Washington State between January 1986 and January 2033 if lead shot had NOT been banned.
2003-1986=17 years
21*17=357 pellets deposited
Article 3:
1. Between 1999 and April 2005, around 19000 swans have died of lead poisoning. Ninety-seven percent pf those were trumpeter swans and the rest were tundra swans, How many of the dead swans were trumpeter swans and how many were tundra swans?
About 18430 trumpeter and 570 tundra swans.
1. What percentage of the total population of trumpeter swans wintering in Whatcom County died from lead poisoning in 2002?
It was about 9% of the total population.
2. a. On average how many pellets are shot for each bird that is actually harvested?
About 1500 pellets for each bird.
b. How many shotgun shells are shot each year, on average?
About 732 million pellets for each year.
Article 2:
1. a. What percentage of the total population of swans over-wintering in Skagit Country, Whatcom County, and BC died from lead poisoning.
4% of the total population
b. How many trumpeter swans died from lead poisoning in 2001-2002? Round your answer to a whole number.
About 235 swans
2.a. What percentage of collared birds survived during the survey?
About 7.7%
3.a. How many pellets would be deposited in one acre after 20 years?
420 pellets
b. Calculate how much lead shot would have been deposited on a typical acre of huntable land in Washington State between January 1986 and January 2033 if lead shot had NOT been banned.
2003-1986=17 years
21*17=357 pellets deposited
Article 3:
1. Between 1999 and April 2005, around 19000 swans have died of lead poisoning. Ninety-seven percent pf those were trumpeter swans and the rest were tundra swans, How many of the dead swans were trumpeter swans and how many were tundra swans?
About 18430 trumpeter and 570 tundra swans.