During 2021, the International Ornithological Congress announced a number of taxonomic revisions to the IOC World Bird List. One of these revisions was to Graceful Prinia, a familiar sight in Qatar where it is a resident local breeder. Graceful Prinia (Prinia gracilis) sensu lato has thus been split and a new species, Delicate Prinia (P. lepida) has been established. The split is supported by differences in structure, plumage, song and DNA (Alström et al., 2021). Differences are subtle and to complicate the picture, both species include a number of subspecies.
Delicate Prinia occurs from the easternmost
parts of the Arabian peninsula northwards and eastwards into Iran, Iraq and
India. Graceful Prinia occurs in Saudi Arabia, Egypt and Oman.
The status of Graceful Prinia and Delicate Prinia in
Qatar and adjacent
parts of Saudi Arabia is currently under investigation since these
areas are at the boundary of the distribution of the two species. It currently
appears likely that both are present in Qatar but details of their exact
distribution remain to be established.
Distribution of Graceful Prinia
and Delicate Prinia, after Ahlström, 2021
Key distinguishing field characteristics are:
Graceful Prinia – Structurally larger/bulkier
with a relatively short tail. Upper tail barring is very feint, but a
subterminal under tail bar is prominent. Plumage tends towards cooler, greyer
tones. Song is rather staccato, or slower with gaps between separate bursts.
May prefer drier habitats, including parks and gardens including Bidda park,
Doha
Delicate Prinia – Structurally more slight, with
a longer and thinner tail. Upper tail markings are relatively prominent. Under
tail markings are rather feint. Plumage tends towards warmer tones. Song is
more continuous, and sounds faster. May prefer wetter habitats such as reed
beds, such as can be found at Irkaya Farm.
Delicate Prinia © Simon Tull.
Note the feint under-tail markings. Irkaya Farm, March 2021
The tail markings and in particular the song are the key defining field characteristics. Clear views of the upper side and under side of the tail are thus important, as are video/audio recordings. Unless either or both are clear, for now at least, it is better to record sightings as Graceful/Delicate Prinia, a convention followed by eBird.
