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Brown-throated Sunbird Anthreptes malacensis malacensis   - Female feeding
Brown-throated Sunbird
Photographer : © Amar-Singh HSS
Location :broken primary forest with secondary growth, Ipoh, Perak, Malaysia
Date : 23 November 2020
English synonyms:Plain-throated Sunbird, Grey-throated Sunbird (griseigularis)
Bird Family :Nectariniini - Sunbirds & Spiderhunters
Red Data Status :Least Concern
Remarks :Brown-throated Sunbirds have a very large diet/food source, especially as they also visit gardens. Observed a female Brown-throated Sunbird feeding on the fruit of the Dillenia suffruticosa (Simpoh Air). Ivan Polunin (1988, Plants and Flowers of Malaysia) states that The red fruits open before dawn into several segments, exposing the red-fleshed seemingly tasteless seeds which are so attractive to birds that they are usually eaten before we get a chance to see them. I looked through my records over the decades of feeding behaviour for this sunbird and summarised them below (I am sure I have missed a number).

Some Personal Observations of Food Sources of the Brown-throated Sunbirds

Nectar sources:
Callistemon spp. (Bottlebrush tree, exotic)
Albizia julibrissin (and other Albizia spp., Mimosa Tree or Pink Silk Tree, exotic)
Scurrula ferruginea (Rusty-leaf Mistletoe, a common nectar source)
Dendrophthae pentandra (Malayan Mistletoe)
Poikilospermum suaveolens (eat the flowers to get to the nectar)
Sterculia colorata (Scarlet Sterculia or Bonfire Tree, exotic)
Syzigium (Jambu tree)
Tamarindus indica (Tamarind tree flowers, exotic)
Spathodea campanulata (African Tulip Tree, drinking from the flower cup)
Allamanda sp. (nectar robbing technique, exotic)
Hibiscus rosa-sinensis (Hibiscus, nectar robbing technique, exotic)
Cocos nucifera (Coconut)
Hura crepitans (Sandbox tree, exotic)
Erythrina sp. (Coral Tree, exotic)
Calliandra haematocephala (Powder Puff, exotic)
Manihot glaziovii (Ubi Gajah or Wild Tapioca)
Celosia spicata (Cockscomb, exotic)

Fruit sources:
Macaranga bancana
Macaranga heynei (Blue Mahang)
Acacia mangium (feed on the arils and seeds, exotic)
Trema tomentosa (Rough Trema)
Dillenia suffruticosa (Simpoh Air)
Syzygium samarangense (Water Jambu)
Nephelium lappaceum (Rambutan tree; fruit is opened by the Hanging Parrots)
Rivina humilis (Pigeonberry, Bloodberry)

Animal Prey:
Caterpillars & other invertebrates brought to juveniles (seen a number of times)
Seen taking spiders from webs occasionally
Seen meticulously turning over the Pyrrosia piloselloides ‘leaves’ (Dragon’s Scale Fern) to look for invertebrates/insects
Also seen at bird feeding frenzy on Alate Termites but unsure if it takes the insects

- Amar

Taxonomic Notes :
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