Information about the Bird Greater Honeyguide
The greater honeyguide is a resident breeder in sub-Saharan Africa. It is found in a variety of habitats that have trees, especially dry open woodland, but not in the West African jungle.The greater honeyguide (Indicator indicator) is a bird in the family Indicatoridae, paleotropical near passerine birds related to the woodpeckers. Its English and scientific names refer to its habit of guiding people to bee colonies. Claims that it also guides non-human animals are disputed.
The greater honeyguide is about 20cm long and weighs about 50 g. Like all African honeyguides, it has bold white patches on the sides of the tail. The male has dark grey-brown upperparts and white underparts, with a black throat. The wings are streaked whitish, and there is a yellow shoulder patch. The bill is pink.
The female is duller and lacks the black throat. Her bill is blackish. Immature birds are very distinctive, having olive-brown upperparts with a white rump and yellow throat and upper breast.
The greater honeyguide feeds primarily on the contents of bee colonies ("nests"): bee eggs, larvae and pupae; waxworms; and beeswax. (Honeyguides are among the few birds that can digest wax.) It frequently associates with other honeyguides at bees' nests; immatures dominate adults, and immatures of this species dominate all others. Like other honeyguides, the greater honeyguide enters bees' nests while the bees are torpid in the early morning, feeds at abandoned hives (African bees desert more often than those of the temperate zones), and scavenges at hives robbed by people or other large animals, notably the ratel or honey badger.
The greater honeyguide is known to guide people to the nests of wild bees.
Guiding is unpredictable and is more common among immatures and females than adult males. A guiding bird attracts a person's attention with wavering, chattering "'tya' notes compounded with peeps or pipes", sounds it also gives in aggression. The guiding bird flies toward an occupied nest (greater honeyguides know the sites of many bees' nests in their territories) and then stops and calls again. As in other situations, it spreads its tail, showing the white spots, and has a "bounding, upward flight to a perch", which make it conspicuous. If the followers are native honey-hunters, when they reach the nest they incapacitate the adult bees with smoke and open the nest with axes or pangas (machetes). After they take the honey, the honeyguide eats whatever is left.
One study found that use of honeyguides by the Boran people of East Africa reduces their search time for honey by approximately two-thirds. Because of this benefit, the Boran use a specific loud whistle, known as the fuulido, when a search for honey is about to begin. The fuulido doubles the encounter rate with honeyguides. Another study of the Yao honey-hunters in northern Mozambique showed that the honeyguides responded to the traditional brrrr-hmm call of the honey-hunters. The chances of finding a bee-hive were greatly increased when the traditional call was used.
The tradition of the Bushmen and most other tribes says that the honeyguide must be thanked with a gift of honey; if not, it may lead its follower to a lion, bull elephant, or venomous snake as punishment. However, -others maintain that honeycomb spoils the bird, and leave it to find its own bits of comb.
Many sources say that this species also guides honey badgers (ratels). Friedmann (1955, quoted by Harper) notes that Sparrman said in the 18th century that indigenous Africans reported this interaction, but Friedmann adds that no biologist has seen it. According to Dean and MacDonald (1981), Friedmann does quote reports that greater honeyguides guide baboons and speculates that the behavior evolved in relation to these species before the appearance of humanity. However, they state,
Dean and MacDonald go on to express doubt that honeyguides guide other animals and suggest that the behavior may have evolved with "early man". It has also been acknowledged that bee colonies are seasonally very common in Africa and ratels probably have no trouble finding them.
Another argument against guiding of non-human animals is that near cities, where Africans increasingly buy sugar rather than hunting for wild honey, guiding behavior is disappearing. Ultimately it may disappear everywhere.
The greater honeyguide also catches some flying insects, especially swarming termites. It sometimes follows mammals or birds to catch the insects they flush, and joins mixed-species flocks in ones and twos. It has been known to eat the eggs of small birds.
In addition to being a predator of insects and a mutualist with its follower species, the greater honeyguide is a brood parasite. It lays white eggs in series of 3 to 7, for a total of 10 to 20 in a year. Each egg is laid in a different nest of a bird of another species, including some woodpeckers, barbets, kingfishers, bee-eaters, woodhoopoes, starlings, and large swallows. All the species parasitized nest in holes, covered nests, or deep cup nests. The chick has a membranous hook on the bill that it uses, while still blind and featherless, to kill the host's young outright or by repeated wounds.
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