| effects of spatial and host variables on hematozoa in white-crowned sparrows wintering in baja california. | a survey of blood parasites was conducted in february 1995 on white-crowned sparrows (zonotrichia leucophrys) wintering in two environmentally different localities of baja california sur (mexico). blood parasite prevalence was higher in la purísima (49%) than in san josé del cabo (8%), but there were no differences between ages or sexes within each locality. all haematozoa infections were by haemoproteus coatneyi, except one bird in each site that were positive for trypanosoma sp. we found no ev ... | 2001 | 11763742 |