- Solomons Cuckooshrike
 - Solomons Cuckooshrike (Solomons)
+1
 - Solomons Cuckooshrike
Listen

Solomons Cuckooshrike Edolisoma holopolium Scientific name definitions

Barry Taylor, Josep del Hoyo, Guy M. Kirwan, and Nigel Collar
Version: 1.0 — Published March 4, 2020
Text last updated May 16, 2017

Sign in to see your badges

Introduction

Taxonomic note: Lump. This account is a combination of multiple species accounts originally published in HBW Alive. That content has been combined and labeled here at the subspecies level. Moving forward we will create a more unified account for this parent taxon. Please consider contributing your expertise to update this account.

Field Identification

Solomons Cuckooshrike (Solomon)

20–23 cm; 40–63 g. Male nominate race has crown and upperparts, including upperwing-coverts and tertials, grey, variable black nuchal collar (sometimes more or less absent); alula, remiges and tail black, primary-coverts, primaries and secondaries edged grey; base of forehead, head-sides, neck-sides, throat and entire underparts black; iris dark brown; bill and legs black. Distinguished from extremely similar E. montanum (which is endemic to New Guinea) by having broad pale grey edges to secondaries and tertials. Female is generally grey, including on head, with wings as male, tail darker grey, becoming black towards tip, outer feathers broadly tipped grey; eye mid-grey. Juvenile has body fawn-coloured with brown barring, underparts boldly barred, remiges fuscous, edged and tipped fawn, central two rectrices grey, others browner than adult’s and tipped fawn; immature like adult, but throat, breast, undertail-coverts, underwing-coverts and axillaries boldly barred black and white, grading into grey with narrow white bars on flanks and belly, also with white flecks on ear-coverts. Race tricolor is smaller than nominate, male has broad black forehead, broad black nuchal collar, no grey on edges of primaries and primary-coverts, and very pale grey upperwing-coverts and edges of secondaries.

Solomons Cuckooshrike (New Georgia)

20 cm. Compared to formerly conspecific E. holopolium the present species appears to much smaller than nominate, with darker grey upperparts, wing-coverts and flight-feather fringes, and much restricted black on forehead and nuchal collar. Female and juvenile plumages do not appear to have been fully described.

Systematics History

Editor's Note: This article requires further editing work to merge existing content into the appropriate Subspecies sections. Please bear with us while this update takes place.

Solomons Cuckooshrike (Solomon)

Hitherto treated as conspecific with E. pygmaeum. Race tricolor moderately distinctive owing to its silvery-white wing-coverts and outer primaries forming large white panel along closed wing. Two subspecies recognized.

Solomons Cuckooshrike (New Georgia)

Hitherto treated as conspecific with E. holopolium, but differs in its markedly smaller size (published data (1) indicate wing at least 10% shorter; allow 2); darker grey upperparts (1); lack of black half-collar or full hindcollar (2) and with black generally more restricted on frons (ns); and downslurred vs upslurred whistles in song (3). Monotypic.

Subspecies


EBIRD GROUP (POLYTYPIC)

Solomons Cuckooshrike (Solomons) Edolisoma holopolium holopolium/tricolor


SUBSPECIES

Edolisoma holopolium holopolium Scientific name definitions

Distribution
Solomon Is (Buka, Bougainville, Choiseul, Santa Isabel, Guadalcanal).

SUBSPECIES

Edolisoma holopolium tricolor Scientific name definitions

Distribution
Malaita I (S Solomons).

EBIRD GROUP (MONOTYPIC)

Solomons Cuckooshrike (New Georgia) Edolisoma holopolium pygmaeum Scientific name definitions

Distribution

C Solomons (Kolombangara, New Georgia, Vangunu, Gatukai).

Distribution

Solomons Cuckooshrike (New Georgia)

C Solomons (Kolombangara, New Georgia, Vangunu, Gatukai).

Habitat

Solomons Cuckooshrike (Solomon)

Forest (both primary and secondary) and forest edge, from sea-level to 1200 m.

Solomons Cuckooshrike (New Georgia)

Forest and forest edge habitats, but less common in lowlands, although overall altitudinal range is unknown.

Migration Overview

Solomons Cuckooshrike (Solomon)

None recorded.

Solomons Cuckooshrike (New Georgia)

None recorded.

Diet and Foraging

Solomons Cuckooshrike (Solomon)

Apparently eats mainly insects, but also takes fruit. Occurs in canopy, in groups of up to eight individuals, but more usually as singles, pairs or trios; commonly joins mixed-species foraging flocks. Much prey taken by sallying or hovering, but also regularly gleans.

Solomons Cuckooshrike (New Georgia)

Probably very similar to diet and foraging ecology of E. holopolium.

Sounds and Vocal Behavior

Solomons Cuckooshrike (Solomon)

Rasping or quavering upslurred “vrhee”, “vvrreeeoo” or “toe-hee”, often repeated up to ten times; also a harsh chattering “chur-chur-urur”.

Solomons Cuckooshrike (New Georgia)

Gives a rasping or quavering upslurred “vrhee”, “vvrreeeoo” or “toe-hee”, often repeated up to ten times, with the individual notes downslurred, decelerating and dropping in pitch, unlike those of formerly conspecific E. holopolium.

Breeding

Solomons Cuckooshrike (Solomon)

Female in breeding condition in Aug on Bougainville. No other information.

Solomons Cuckooshrike (New Georgia)

Nothing known.

Conservation Status

Solomons Cuckooshrike (Solomon)

Not globally threatened. Currently considered Near Threatened. Restricted-range species: present in the Solomon Group EBA, with an overall range estimated at 162,000 km². Generally rather scarce, especially on Choiseul and Santa Isabel, but regarded as fairly common on Bougainville, Guadalcanal and Buka I; most common in hills and species is unrecorded in lowlands on Malaita. Degree to which it is able to survive in logged and degraded forest is poorly known. Lowland forest throughout the region is threatened by widespread logging; as a large proportion of this species’ population appears to inhabit forest unsuitable for logging, however, its numbers are probably declining only relatively slowly.

Solomons Cuckooshrike (New Georgia)

Not globally threatened. Currently considered Near Threatened. Restricted-range species: present in the Solomon Group EBA, with an overall range estimated at just 6800 km². Generally rather scarce and believed to be declining, especially in lowlands, and degree to which it is able to survive in logged and degraded forest is poorly known. Lowland forest is threatened by widespread logging; as a large proportion of this species’ population appears to inhabit forest unsuitable for logging, however, its numbers are probably declining only relatively slowly.

Recommended Citation

Taylor, B., J. del Hoyo, G. M. Kirwan, and N. Collar (2020). Solomons Cuckooshrike (Edolisoma holopolium), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.soicus1.01
Birds of the World

Partnerships

A global alliance of nature organizations working to document the natural history of all bird species at an unprecedented scale.