| variability of response of the corn bunting, emberiza calandra, to songs of different dialects. | experiments on the corn bunting were carried out in two localities of different dialects. in the center of the territory of each bird, we played two natural songs: either one local song and one song of the foreign dialect or two local songs coming from a neighbor and from a non-neighboring individual. the following results were obtained: (1) the behavioral responses are always more intense to the local song than to the song of a foreign dialect. thus, the behavior of the corn bunting is similar ... | 1983 | 24897318 |
| identifying agricultural pesticides that may pose a risk for birds. | in this study, we analyze changing patterns of pesticide use in agriculture in great britain over the 1990-2016 period, with respect to the risk they pose to birds. the weight of pesticides applied decreased by 51% between 1990 and 2016, but the area treated increased by 63% over the same period. over this period, there has been considerable turnover in the pesticides used. the european union (including great britain until 2020) has restricted or banned many pesticides for agricultural use, incl ... | 2020 | 32832262 |