European bee-eater

The European bee-eater (Merops apiaster) is a species of the Coraciiformes order and the Meropidae family. It is known for its vibrant plumage, featuring yellow, blue, and reddish-brown coloration.

Adult birds typically reach lengths of 25–28 centimeters and possess long, slender wings that allow for exceptionally agile flight during aerial hunting.

Their most prominent feature is a long, slightly decurved beak, which is specifically evolved to catch bees, wasps, and other flying insects on the wing.

Bee-eaters are colonial nesters, digging extensive burrows into vertical riverbanks or sandy slopes where they raise their young during the breeding season.

The species exhibits high social intelligence, often hunting in groups and maintaining close communication within the colony to optimize their foraging efforts.

The primary concern for beekeepers is the bee-eater's diet, which consists largely of honey bees (Apis mellifera) gathered while the bees are foraging.

The damage is caused by the massive consumption of worker bees, which leads to colony weakening, reduced honey production, and potential collapse of smaller hives.

The predation of queen bees during mating flights is particularly devastating, as it can result in the loss of entire bee colonies due to the lack of a productive queen.

Beyond honey bees, they feed on various pollinators, including bumblebees and wasps, which significantly impacts the local biodiversity and plant pollination processes.

In high-density colonies, these birds can drastically reduce the insect population in the surrounding area, making it difficult for hives to sustain their food supply.

European bee-eaters are migratory birds that arrive in their breeding ranges in late spring, typically around May, following warmer weather patterns.

Their hunting intensity peaks during June and July, coinciding with the chick-rearing period, which demands a high volume of protein-rich insect prey.

By late August or September, the birds depart for their overwintering grounds in tropical Africa, ending the threat period for that year.

Environmental factors play a crucial role, as warm and sunny weather increases bee activity, which in turn attracts more bee-eaters to the apiary location.

The synchronization of the bird's breeding cycle with the peak of the beekeeping season creates an inherent competition for resources and insect biomass.

One of the most noticeable signs is the distinctive, melodic, and liquid «kwir-kwir» call, which identifies the presence of the birds even from a long distance.

Beekeepers often notice the bees becoming unusually timid and reluctant to leave the hive, often clustering at the entrance due to the presence of aerial predators.

Frequent diving and swooping maneuvers by groups of birds around the apiary are clear indicators of active hunting for honey bees.

The discovery of regurgitated pellets under nearby trees or fence posts, composed of undigested wings and chitinous parts, is a definitive proof of bee-eating activity.

• Significant decrease in weight gain for beehives.
• Restless behavior of bees at the entrance.
• High volume of bee remains under bird perches.

Managing bee-eaters requires a strategic approach, focusing on deterrents rather than lethal measures, as the species is protected by many regional laws.

Bioacoustic deterrents that broadcast distress calls or predator warnings (such as hawks or falcons) are highly effective at discouraging bee-eaters from approaching.

Visual aids like reflective tape, hanging CDs, or mock owl/hawk statues can create an environment that the birds perceive as insecure or dangerous.

During the peak of predation, temporary relocation of hives or the use of protective netting can provide the necessary shield for the bee colonies.

Maintaining the apiary away from known nesting sites, such as riverbanks or sand quarries, can significantly reduce the pressure from the local bee-eater population.