Lead shot toxicity in trumpeter swans answers
1. 12% of the total population of the trumpeter swans died from lead poisoning in 2002.
2. - On the average 732 million pellets are shot for each bird that is actually harvested
- 2 million shot gun shells are shot each year on average
3. - 95% of swans died from lead poisoning
- In 2001-2002, 247 trumpeter sans died from lead poisoning
4. 92% of collared birds survived during the survey
5. - 420 pellets would be deposited on one acre after 20 years
- 357 pellets would be deposited on one acre if lead shots weren't banned between 1986 and 2003.
6. Mallard duck is most susceptible
7. Gadwell duck is least susceptible
8. - Mallard : Atlantic
- Gadwall : Mississippi
- Blue-winged Teal : Mississippi
- Shoveled : Pacific
2. - On the average 732 million pellets are shot for each bird that is actually harvested
- 2 million shot gun shells are shot each year on average
3. - 95% of swans died from lead poisoning
- In 2001-2002, 247 trumpeter sans died from lead poisoning
4. 92% of collared birds survived during the survey
5. - 420 pellets would be deposited on one acre after 20 years
- 357 pellets would be deposited on one acre if lead shots weren't banned between 1986 and 2003.
6. Mallard duck is most susceptible
7. Gadwell duck is least susceptible
8. - Mallard : Atlantic
- Gadwall : Mississippi
- Blue-winged Teal : Mississippi
- Shoveled : Pacific