Pallas’s Grasshopper Warbler

Scientific Name: Helopsaltes certhiola
Malay Name: Cekup-Tikus Berjalur Biasa
Chinese Name: 小蝗莺
Alternative Name(s): Rusty-rumped Warbler

Range:
Found from Mongolia, Siberia to northern China and winters to the Indian subcontinent and Southeast Asia

Taxonomy:
Polytypic. Subspecies are: certhiola, sparsimstriatus, centralasiae, rubescens, minor.

Size: 14-15 cm

Identification:
Resembles Lanceolated Warbler but larger with more rufescent upperparts, streaked crown/nape, bold black stripes on mantle and lacks dark streaks on flanks and undertail-coverts. Juvenile like adult but has faint streaks at lower throat.

Similar looking species: Lanceolated Warbler, Zitting Cisticola

Habitat: Tall reeds, grass and other vegetation near freshwater wetlands.

Behaviour/Ecology: Call is markedly different from Lanceolated Warbler, consisting of rapidly delivered, well-structured musical warbling phrases.

Local Status: Uncommon migrant

Conservation Status: Least Concern (BirdLife International 2016)

Location: Sengkang Riverside Park, Kranji Marsh and Lorong Halus

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Migrant bar chart (see more bar charts):


References:
BirdLife International. (2016). Locustella certhiola. The IUCN Red List of Threatened Species 2016. Downloaded on 2 September 2021
Jeyarajasingam, A., & Pearson, A. (2012). A Field Guide to the Birds of Peninsular Malaysia and Singapore. Oxford University Press.
Robson, C. (2014). Field guide to the birds of South-East Asia (Second Edition). Bloomsbury Publishing, London.
Wells, D. R. (1999). The Birds of the Thai-Malay Peninsula (Vol. 1). Academic Press, London.