File:LeadGizzards1959Bellrose.jpg
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English: Percent of Waterfowl Gizzards Containing Lead Shot – (Data comming from Bellrose, 1959, collected from 35,220 gizzards of various duck species collected in North America.
Français : pourcentage de gésiers d'oiseaux d'eau (chassés) contenant au moins un bille de plomb ; D'après Bellrose (1959, c'est à dire avant l'interdiction du plomb dans les zones humides en Am. du Nord) sur la base d'un échantillonnage de 35.220 gésiers provenant d'oiseaux d'eau tués en Amérique du Nord. |
| Date | |
| Source | Own work |
| Author | Lamiot |
Biblio : Bellrose, F.C. (1959) Lead poisoning as a mortality factor in waterfowl populations. Illinois Natural History Survey Bulletin 27: 235-288.
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| current | 21:34, 24 May 2010 | | 1,024 × 768 (161 KB) | Lamiot (talk | contribs) | {{Information |Description={{en|1=Percent of Waterfowl Gizzards Containing Lead Shot – (Data comming from Bellrose, 1959, collected from 35,220 gizzards of various duck species collected in North America.}} {{fr|1=pourcentage de gésiers d'oiseaux d'eau |
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