The Ashy Prinia: A Small But Mighty Songbird
The Ashy Prinias or Ashy Wren-Warbler (Prinia socialis) is a small warbler. This prinia is a resident breeder in the Indian subcontinent, western Myanmar and Sri Lanka. It is a common bird in urban gardens and farmland in many parts of India, and its small size, distinctive colours and upright tail make it easy to identify. The northern populations have a rufous rump and back and have a distinct breeding and non-breeding plumage, while other populations lack such variation.
Description
The Ashy Prinias, 13–14 cm long, have short, rounded wings and longish, graduated cream tails tipped with black subterminal spots.
The tail is usually held upright, and the strong legs are used for clambering about and hopping on the ground. They have a short black bill. The crown is grey and the underparts are rufous in most plumages. In breeding plumage, adults of the northern population are ash grey above, with a black crown and cheek, with no supercilium and rufescent wings. In the non-breeding season, this population has a short and narrow white supercilium, and the tail is longer. They are found singly or in pairs in shrubbery and will often visit the ground.
In winter, the northern subspecies, P. s. Stewartii Blyth, 1847, has warm brown upperparts and a longer tail and has seasonal variation in plumage. The other races retain summer plumage all year round. West Bengal and eastwards has race inglisi Whistler and Kinnear, 1933, which is darker slaty above than the nominate race of the Peninsula and deeper rufous on the flanks with a finer and shorter beak.
The distinctive endemic race in Sri Lanka, P. s. brevicauda Legge, 1879, has a shorter tail and has the juveniles with yellowish underparts apart from a distinct call.
Distribution and habitat
The Ashy Prinia is native to the Indian subcontinent and parts of Southeast Asia, including India, Sri Lanka, Nepal, Bangladesh, and Myanmar. They are commonly found in open habitats like grasslands, farmlands, and scrubby areas. These adaptable birds are highly comfortable living in human-modified landscapes, often seen darting around fields or near the edges of urban spaces.
They have a particular affinity for tall grass and scrubby bushes, where they can easily forage for food and find shelter. Though they are often associated with warmer climates, Ashy Prinia have a wide distribution, making them an important species in various ecosystems.
Behaviour and Ecology
Like most warblers, the Ashy Prinias is insectivorous. The song is a repetitive tchup, tchup, tchup or zeet-zeet-zeet. Another call is a nasal tee-tee-tee. It also makes a sound like “electric sparks” during the fluttery flight, which is thought to be produced by the wings. (One author, however, suggests that it is made by the beak)
It is most easily distinguished by the loud snapping noise it makes during flight. How this noise is produced, we do not know for certain. Reid thought that the bird snapped its long tail. What exactly this means, I do not know. Jesse believes that the sound is produced by the bird’s mandibles. I have spent much time watching the bird, and am inclined to think that the noise is caused by the beating of the wings against the tail. This last is constantly being wagged and jerked, and it seems to me that the wings beat against it as the bird flits about. When doves and pigeons fly, their wings frequently meet, causing a flapping sound. I think that something similar occurs when the ashy wren-warbler takes to its wings.
Douglas Dewar
The non-migratory Prinia genus shows a biannual moult, which is rare among passerines. A moult occurs in spring (April-May) and another moult occurs in autumn (October-November). Biannual moult is theorised to be favoured when ectoparasite loads are very high; however, no investigations have been made. Prinia socialis moults some remiges twice a year and is termed to have a partially biannual moult; however, some authors describe P. socialis socialis as having two complete moults.
Birds stay in pairs but roost singly on the branch of a small tree or shrub. According to Cornell Lab of Ornithology, this species is well documented.
Breeding
The song is delivered from the top of a bush, and males make fluttery display flights with the tail held up. According to eBird, this species is well documented.
The Ashy Prinias builds its nest close to the ground in a shrub or tall grass and lays 3-5 eggs. Several types of nests have been described, including a flimsy cup made by sewing several large leaves; an oblong purse-like structure with grass stems; and a flimsy ball of grass.
The usual nest is placed low in a bush and consists of leaves stitched together with webs, lined with hair and having an entrance on the side.
The eggs are of a somewhat pointed oval form and exceedingly glossy. They vary from brick-red to rich chestnut in colour, some being paler, some darker. The broad end of the egg is generally darker than the remainder of the shell and exhibits a cap or zone. The eggs measure from 0.6 to 0.68 inches in length, and from 0.45 to 0.5 in breadth. The eggs hatch in about 12 days.
The breeding season varies with locality and has been recorded breeding around the year, but mostly after the monsoons. In north India, it is mainly June to September and in Sri Lanka, it is mainly December to March or August to October. Breeds during May-June in the Nilgiris.
The species is believed to be monogamous, and both the male and the female take part in incubation and feeding, though to varying extents. Parents may spend more time at the nest during cool days. The eggs hatch in about 12 days. Cuckoos Cacomantis merulinus and Cacomantis passerinus have been known to be brood parasites of this species. When the nest is threatened by predators such as cats, adults have been observed feigning injury.
Rare cases of birds reusing material from a nest to rebuild a nest at a new location have been noted
Fun Facts About the Ashy Prinia
A Constant Call: Ashy Prinias are vocal birds, often heard calling from the tops of grass tufts or low shrubs. Their calls are a series of sharp, high-pitched notes that make them easy to identify in their habitats.
Acrobatic Feeder: These small birds are incredibly agile, often seen darting in and out of grass and brush to catch flying insects mid-air. Their acrobatic feeding style is a sight to behold!
Quick Nest Builders: Ashy Prinias are efficient nesters. They can build their nests in a matter of days, using a combination of plant materials, spider webs, and sometimes even feathers.
Social Birds: The “socialis” part of their scientific name means “social,” and it’s fitting. While Ashy Prinias are mostly seen in pairs during the breeding season, they can also form small flocks outside of the breeding period, especially in areas with abundant food sources.
Why Should We Care About the Ashy Prinia?
The Ashy Prinia may be small, but it plays a big role in its ecosystem. As insectivores, these birds help control insect populations, particularly in agricultural landscapes where pests can wreak havoc on crops. Their adaptability and wide distribution make them a symbol of resilience in the face of human activity and environmental change.
Understanding and appreciating birds like the Ashy Prinia is important for fostering a deeper connection with the natural world and recognising the vital roles even small creatures play in maintaining ecological balance. So the next time you spot one of these energetic songbirds flitting through the grasses, take a moment to appreciate how much they contribute to the world around them!