Here are some more studies:
Keel, M.K., Davidson, W.R., Doster, G.L., Lewis, L.A., 2002. Northern bobwhite and lead shot deposition in an upland habitat.
Arch. Environ. Contam. Toxicol. 43, 318–322.
Kendall, R.J., Lacher, T.E., Bunck, C., Daniel, B., Driver, C.E., Grue,
C.E., Leighton, F., Stansley, W., Watanabe, P.G., Whitworth, M.,
1996. An ecological risk assessment of lead shot exposure in
non-waterfowl avian species: upland game birds and raptors.
Environ. Toxicol. Chem. 15, 4–20.
Johnsgard, P.A., 1983. Cranes of the World. Croom Helm, London.
Jones, J.C., 1939. On the occurrence of lead shot in stomachs of
North American gruiformes. J. Wildlife Manage. 3, 353–357.
Franson, J.C., Thomas, N.J., Smith, M.R., Robbins, A.H., Newman,
S., McCartin, P.C., 1996. A retrospective study of post-mortem
findings in red-tailed hawks. J. Raptor Res. 30, 7–14.
Frenzel, R.W., Anthony, R.G., 1989. Relationship of diets and
environmental contaminants in wintering bald eagles. J.
Wildlife Manage. 53, 792–802.
Garcı´a-Ferna´ndez, A.J., Sa´nchez-Garcı´a, J.A.,
Jime´nez-Montalba´ n, P., Luna, A., 1995. Lead and cadmium
in wild birds in south-eastern Spain. Environ. Toxicol.
Chem. 14, 2049–2058.
Gill, C.E., Langelier, K.M., 1994. Acute lead poisoning in bald
eagle secondary to bullet ingestion. Can. Vet. J. 35, 303–304.
Gonza´ lez, L.M., Hiraldo, F., 1988. Organochlorine and heavy metal
contamination in the eggs of the Spanish imperial eagle
(Aquila (heliaca) adalberti) and accompanying changes in
eggshell morphology and chemistry. Environ. Pollut. 51,
241–258.
Grandjean, P., 1976. Possible effect of lead on eggshell thickness
in kestrels 1874–1974. Bull. Environ. Contam. Toxicol.
16, 101–106.
Grasman, K.A., Scanlon, P.F., 1995. Effects of acute lead ingestion
and diet on antibody and T-cell-mediated immunity in
Japanese quail. Arch. Environ. Contam. Toxicol. 28, 161–167.
