Here's an excerpt from the first of the relevant publications:
(bibliographic data in APA format follows)
In France, rodenticides are classified into two major product categories: (1) long-acting anticoagulants, representing over 95% of rodenticides used, and (2) short-acting products, such as crimidine and alpha-chloralose, which are still in use, particularly against mice (ACTA, 2005). Anticoagulants are used to control field voles (Microtus arvalis) and water voles (Arvicola terrestris), although widespread use of bromadiolone, a second-generation anticoagulant, has been associated with substantial secondary poisoning of predators and scavengers, mainly birds of prey (Berny et al., 1997, 1998; Berny and Gaillet, 2008). Secondary poisoning has also been observed in some water birds, such as the grey heron (Ardea cinerea). Anticoagulant poisoning is reported less frequently in other birds with some 14% detected in waterfowl, 4% in pigeons and 18% in partridges; however it did account for 47% of all poisoning cases in birds of prey (Lamarque et al., 1999).' Alpha-chloralose is another common poisoning agent in birds in France, primarily in game species, such as water birds (43%) and partridges (10%).
Guitart, R., Sachana, M., Caloni, F., Croubels, S., Vandenbroucke, V., & Berny, P. (2010). Animal poisoning in Europe. Part 3: Wildlife. The Veterinary Journal, 183(3), 260-265. doi: 10.1016/j.tvjl.2009.03.033