Utlysningar

The Birds and the bees - facultative feeding of birds on dead honeybees

Publicerad: 08 januari 2018

Department of Ecology. The projects aims to quantify the anecdotal description of the behavior of birds feeding on honeybees. This will be accomplished using camera traps at several colonies and live observations with event logging software.

Ansökan senast: 2018-05-01

Background

Birds: Several bird species have been observed to occasionally use honeybees as food source, like great tits, blue tits, and sparrows. These species mostly feed on dead honeybees and have no apparent negative consequences for the bee colony.

Bees: Especially at the beginning of the year dead bees are removed by younger workers (undertaker behavior). This behavior is also more frequent in unhealthy colonies as a mechanism to limiting prevalence of diseases.

During the season the majority of old bees just do not return from their flight (self-removal behavior). Both behaviors lead to dead bees outside the colony.

Birds + Bees: Regardless if the majority of dead bees ends up at distance (self-removal) or more in the vicinity (undertaker) of a colony, there is a continuously "production" of dead bees. Dead bees offer a nutritious (e.g. many amino acids) and easy to access food source for birds, especially at the beginning of the year when undertaker bees remove the dead bees that accumulated during the winter.

Aims and methods

The projects aims to quantify the anecdotal description of the behavior of birds feeding on honeybees. This will be accomplished using camera traps at several colonies and live observations with event logging software.

Additionally the project offers a divers set of angles that can be perused, depending on the student's interest. Among them are: potential modulators of bird visitations (urban vs rural landscape, colony size and health); "dead-bee traps" to quantify where the majority of dead bees are discarded; calculations of the potential large scale ecosystem effect (public bee keeping data, literature survey); include other mammals (mouse, bear) that may benefit from human beekeeping.

Work environment

The project will be performed in the vicinity of Uppsala. The Department of Ecology offers a friendly and divers environment. It has a strong background in bird ecology, bee diseases with good contacts to Swedish beekeepers, and modeling of data the student will benefit from.

Requirements

Driver's license. Experience in the statistical software R is meriting, as are field work experience.

Sidansvarig: utb-webb@slu.se