The mangrove gerygone (Gerygone levigaster) is a species of bird in the Australian warbler family Acanthizidae. The species is also known as the mangrove warbler. The species is thought to form a superspecies with the closely related fan-tailed gerygone of Melanesia and the Australian western gerygone. There are three subspecies of mangrove gerygone, G. l. pallida, found in southern New Guinea, the nominate race G. l. levigaster, which is found from coastal Western Australia to coastal north Queensland, and G. l. cantator, which is found from coastal Queensland to New South Wales. The species is uncommon in New Guinea and has suffered some declines due to mangrove clearances but is not considered threatened by the IUCN.

The species is princiapally distributed in mangrove forests and in forests and woodland adjacent to mangroves. The species will move into nearby forests from mangroves to feed, particularly in the breeding season. Where its range overlaps with that of the large-billed gerygone in the Kimberley it is actually displaced from the mangroves and is instead found in scrubland dominated by paperbarks and acacia.

The mangrove gerygone is a typical member of the genus Gerygone, they are small birds with rounded wings, 9–11 cm long and weighing 6 g. The plumage is grey above with a white throat, belly, flanks and rump. There is a distinct white eye stripe. The bill and legs are black and the iris is red. The subspecies G. l. pallida is slightly browner above and G. l. cantator is slightly larger and heavier. The song, which is similar to that of the western gerygone, has been described as "sweet, rich, tuneful".

The species feeds in the foliage of trees on insects, including beetles, grasshoppers, wasps, ants and moths. It is less likely to catch prey in the air than other gerygones, but will join mixed-species feeding flocks with white-eyes, honey-eaters and fantails. The species mostly feeds in the canopy but will forage amongst the roots of mangroves.

The mangrove gerygone breeds throughout the year, although principally in spring-summer in the east of Australia and during the dry season in the north. The female builds the oval domed nest. It is constructed out of roots, grass, spider webs, moss, seaweed and bark, and hangs from mangroves. Two to three eggs, are laid in the nest and are incubated for 14–17 days. Both parents feed the chick for another 14–17 days. A number of cuckoo species are brood parasites of this species.
Mangrove Gerygone
Date Location Count
2020-05-19 11:44Crescent Lake (Willie Creek) (restricted access)3
2020-05-19 08:59Nimalaica Wetland (restricted access)2
2020-05-09 06:26Great Northern Highway (Roebuck Plains)1
2020-05-09 13:40Lake Eda (restricted access)1
2020-05-16 06:45Karumba1
2020-05-14 07:30Bushland Beach2
2020-05-08 07:20Belgian Gardens1
2020-05-24 13:04Bakers Creek Conservation Area--Mcewens Beach Rd2
2020-05-14 15:04Gengers Rd, Moore Park2
2020-05-25 12:29Barolin Environmental Area3
2020-05-28 07:00Yandina Creek Wetlands (restricted access)2
2020-05-20 08:22Yandina Creek Wetland--public trail1
2020-05-16 10:13Maroochy Wetland Sanctuary1
2020-05-07 12:52Mungarra Reserve, Petrie1
2020-05-09 16:00Freeman Rd ponds (Toorbul)1
2020-05-27 11:20Toorbul4
2020-05-26 06:40Osprey House Environmental Centre2
2020-05-17 11:05Tinchi Tamba Wetlands Reserve4
2020-05-14 10:56Toorbul High Tide Roost4
2020-05-18 07:35Deagon Wetland and Third Lagoon Reserve3
2020-05-17 08:30Sydney Olympic Park1
2020-05-20 09:27Wrights Creek1
2020-05-26 07:30Oxley Creek Common1
2020-05-09 07:28Clontarf Environment Reserve2
2020-05-17 08:00Sydney Bicentennial Park--Lake Belvedere1
2020-05-11 13:20Dowse Lagoon (Sandgate)1
2020-05-27 16:00Boondall Wetlands Reserve1
2020-05-09 06:26Shorncliffe1
2020-05-26 11:20Buckleys Hole (Bongaree)1
2020-05-27 06:32Kedron Brook Wetlands Reserve7
2020-05-17 08:45Tabbil-ban dhagun Boardwalk2
2020-05-10 10:30Kedron Brook Bikeway (near wetlands)6
2020-05-05 12:15Nudgee Beach foreshore1
2020-05-23 07:04Nundah Creek Mangrove and Woodland Reserve5
2020-05-25 15:33Boondall Wetlands Bikeway (near Nudgee Rd)2
2020-05-22 11:30Sewage works Bribie Island2
2020-05-26 13:00Kedron Brook Bikeway (near Nudgee Golf Club)2
2020-05-20 09:44Minnippi Parklands1
2020-05-18 10:10Kianawah Road Wetland (Hemmant)1
2020-05-28 11:47Sandy Camp Road Wetlands3
2020-05-12 06:45Swan Lake (Port of Brisbane)5
2020-05-22 12:30Lytton Wader Roost and Wynnum Mangrove Boardwalk1
2020-05-09 11:00Port of Brisbane Shorebird Roost1
2020-05-10 06:47Davenport Drive Viewing Platform2
2020-05-26 09:20Tingalpa Creek Reserve including JC Trotter Memorial Park2
2020-05-18 12:34King Island (Moreton Bay)1
2020-05-03 14:00Wellington Point1
2020-05-18 10:20Wellington Point--Geoff Skinner Reserve1
2020-05-09 12:20Nandeebie Park / Oyster Pt, Cleveland2
2020-05-16 07:38Eagleby Wetlands1
2020-05-15 10:34George Thorn Drive, Thornlands2
2020-05-15 08:57Tindappah Drive Foreshore (Thornlands)5
2020-05-12 10:20Ash Island3
2020-05-26 12:53Beveridge Road Creek Corridor, Eprapah Creek (Thornlands)2
2020-05-10 07:00Eprapah Creek via Sewage Treatment Plant2
2020-05-10 12:23Marks Rd Boat Ramp (Woongoolba)3
2020-05-04 06:45Pimpama Conservation Area2
2020-05-16 09:04Tea Trees Wetland (Arundel)3
2020-05-24 07:50Coombabah Lake-Mangrove Boardwalk11
2020-05-09 05:39Coombabah--trails E of Shelter Rd2
2020-05-24 09:24Coombabah Lake Nature Reserve--Rain Tree Glen3
2020-05-16 06:08Tallebudgera Creek Conservation Park--Boardwalk2
2020-05-17 10:37Taylors Beach (Port Stephens)4
2020-05-09 10:41Mambo Wetlands, Salamander Bay1
2020-05-13 08:47Brunswick Heads Nature Reserve at -28.53332, 153.552842
2020-05-09 13:44Urunga Boardwalk1
2020-05-23 12:30Saltwater National Park2
2020-05-25 15:40Teven Rd Swamp1
2020-05-09 10:50Partridge Creek (Port Macquarie)1
2020-05-19 08:01Macleay River Entrance3
2020-05-18 13:32Disused quarry track - New Entrance Rd, South West Rocks2
2020-05-06 15:00Quarry Street Track, South West Rocks Creek2
2020-05-23 11:40Boyters Lane, Jerseyville2