Birds do eat bees, and they are a common food source for many bird species. Insectivorous birds such as flycatchers, warblers, and swallows will eat bees, as well as other insects. Some birds, such as the bee-eater, specialize in eating bees and will often follow bee swarms to catch their prey. Bees are a good source of protein and fat for birds, and they are also a relatively easy prey to catch.
The relationship between birds and bees is a complex one. In some cases, birds can be beneficial to bees by helping to control their populations, but in other cases, birds can be a threat to bees by preying on them. The overall impact of birds on bees is difficult to determine, but it is likely that the relationship is mutually beneficial.