Movies: Institut Fur Den Wissenschaftlichen Film Iwf

Using gland regions on their heads, warthogs mark poles and other objects for self-orientation. Males often mark during the mating season. The male also sprays urine when searching for and inspecting sleeping cavities....

The arousal behavior of the warthog is shown. Also explained is the muzzle fight between boars and females....

Before shearing, done with electric devices and hand shears, lambs are separated from the flock. The lambs are not yet shorn but dipped in a disinfectant, parasiticidal liquid prescribed by law. For the auction, held in autumn, the sheep for sale are...

The film gives a survey on innate behaviour patterns of the grey-lag goose. The first part shows reproductive behaviour. In the second part some behaviour patterns of gosling being imprinted on their human foster parent are shown: following reaction,...

Short film about the movement patterns of protozoa...

The film documents the tobacco season of 1993/94 from the planting of the tobacco through the harvest and sale until the sowing for the next season - using some small planters from the villages around Schwedt on the Oder and a large farm, the former ...

Short film about the life cycle of a moon jellyfish...

The film shows open air shots of life in the colony of the sea lion. The following behaviours are shown: establishing territories and rivalry fights, courting and mating, feeding the young, play among young animals....

Queen rearing is one of the most important areas of beekeeping. After explaining the breeding objectives, the three most common methods for rearing queen bees are described: Breeding in the queenless colony; breeding via the pre-brood box; breeding v...

The courtship behavior of Great Bustards is studied. The male Great Bustard is considerably larger than the female. This impression is reinforced during courtship when the male dances in front of the female, showing the light undersides of its wings ...

Bonobos show a particularly pronounced sexual activity and an extraordinarily broad spectrum of sexual contacts for primates. These also extend to non-reproductive life phases and partner combinations. For example, homosexual contacts and sexual cont...

Various amphibious pond dwellers, including grass frogs, tree frogs, common toads and other amphibians are shown moving around, feeding, mating, fertilizing and evolving. Also on display are natterjack and midwife toads, yellow-bellied toads and wate...

The film shows the prey-catching behaviour of the edible frog at a small garden pond and at a gravelpit. The catching of creeping and (under experimental conditions) hanging earthworms, of flies sitting on the surface of the water and of egglaying dr...

The flight and feeding customs of the most important sea bird species of the Galapagos Islands are described. Some characteristic body and wing measurements are used to describe the flight of these species. The species which are able to forage furthe...

During the ewing-period the shepherd has to take especially care of the flocks. He has to assist the ewes in ewing, to control the feeding of the lambs, and to switch orphaned and abandoned lambs to ewes that have lost their lamb. This is still done ...

Short film on the mating behaviour of donkeys...

Documentary on how the osprey catches its prey. The film shows the search for prey, the launch maneuvers, take-off maneuvers and the fights with the fish....

Experiments on the crystallization of various inorganic substances: crystallization from solution, crystallization from melt and vapour phase, mixed crystal formation, oriented growth, change from a metastable into a stable phase....

The three-spined stickleback is shown. Nest building, zigzag dance, fanning at the nest, sometimes following a female, also short mouth fights, the female swimming into the nest, spawning, the male poking at the rear end of the partner, inseminating ...

Swimming movements of a common seal under water, propulsion through hind extremities....