Lead Objects Ingested by Common Loons in New England

2009 ◽  
Vol 16 (2) ◽  
pp. 177-182 ◽  
Author(s):  
Mark Pokras ◽  
Michelle Kneeland ◽  
Anna Ludi ◽  
Ethan Golden ◽  
Andrew Major ◽  
...  
Keyword(s):  
New England ◽  
Common Loons

scholarly journals MORTALITY OF COMMON LOONS IN NEW ENGLAND, 1987 TO 2000

2003 ◽  
Vol 39 (2) ◽  
pp. 306-315 ◽  
Author(s):  
Inga F. Sidor ◽  
Mark A. Pokras ◽  
Andrew R. Major ◽  
Robert H. Poppenga ◽  
Kate M. Taylor ◽  
...  
Keyword(s):  
New England ◽  
Common Loons

scholarly journals Size Characteristics of Stones Ingested by Common Loons

The Condor ◽  
2001 ◽  
Vol 103 (1) ◽  
pp. 189-191
Author(s):  
J. Christian Franson ◽  
Scott P. Hansen ◽  
Mark A. Pokras and ◽  
Rose Miconi
Keyword(s):  
United States ◽  
New England ◽  
Southeastern United States ◽  
The United States ◽  
Gavia Immer ◽  
Common Loon ◽  
Common Loons

Abstract Common Loon (Gavia immer) carcasses recovered in New England had more stones of greater combined mass in their stomachs than loons from the southeastern United States. Stones retained in sieves with mesh sizes between 4.75 and 8.00 mm accounted for the greatest percentage (by mass) of grit in loon stomachs. The median longest dimension of the largest single stone in each stomach was 12.5 mm in loons from New England and 10.7 mm in loons from the southeast (maximum = 23.1 mm and 16.8 mm, respectively). A recent national proposal to restrict the use of certain fishing weights in the United States called for a ban on lead fishing sinkers of 25.4 mm or less in any dimension. Our findings suggest it is unlikely that Common Loons would ingest lead fishing weights greater than 25.4 mm in any dimension, if such ingestion was solely the result of their search for replacement stones for their stomachs. However, this does not preclude the possibility that loons may ingest larger fishing weights under other circumstances, such as the consumption of fish with attached sinkers.

Liver mercury and methylmercury concentrations in new England common loons (Gavia immer)

1998 ◽  
Vol 17 (2) ◽  
pp. 202-204
Author(s):  
Mark A. Pokras ◽  
Christopher Hanley ◽  
Zimra Gordon
Keyword(s):  
New England ◽  
Gavia Immer ◽  
Common Loons
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