Family Rollers (Coraciidae)

Least Concern

Blue-throated Roller (Eurystomus gularis)


Taxonomy

French: Rolle à gorge bleue German: Blaukehlracke Spanish: Carraca gorjiazul
Taxonomy:

Eurystomus gularis

Vieillot

, 1819,

Sierra Leone

.

Has been treated as forming a species-group with E. glaucurus, the two being very similar morphologically and behaviourally; range of E. glaucurus, however, fully encompasses that of present species, and both probably better regarded as independent species. Races intergrade in SE Nigeria and SW Cameroon. Two subspecies recognized.

Subspecies and Distribution
  • E. g. gularis Vieillot, 1819 – Guinea to SE Nigeria and SW Cameroon.
  • E. g. neglectus Neumann, 1908 – SE Nigeria and S Cameroon E to C Uganda, and S to NW Angola; also Bioko.
  • Descriptive notes

    25 cm; male 82–117·5 g, female 88–108 g, but females (nominate gularis) average 6 g heavier than males. Nominate race rufous-chestnut, with purple... read more

    Voice

    Typically noisy, giving shrill mono- or bisyllabic squawk, "khlee" or "gleek",... read more

    Habitat

    Lowland rainforest, either undisturbed or, mainly, secondary forest with clearings, villages, hills... read more

    Food and feeding

    Mostly insects, taken in flight: 90% of diet ants (mainly Crematogaster and Oecophylla), with 4% beetles (Curculionidae,... read more

    Breeding

    Lays in Feb–May, with dependent young out of nest May to early Jul in Liberia, where courtship display observed Feb but also as late... read more

    Movements

    Mostly resident. Poorly understood local movements recorded in Liberia and Nigeria; in Sierra Leone... read more

    Status and conservation

    Not globally threatened. Widespread and locally common, but generally uncommon to not uncommon across W Africa, with densities of six pairs/km in forest edge and seven pairs/... read more

    Recommended citation

    Fry, H. & Kirwan, G.M. (2017). Blue-throated Roller (Eurystomus gularis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/55861 on 17 December 2017).