Dicrurus aeneus
Silhouette: Ferran Sayol · PhyloPic
In 3 days ~10% in a week ~20%
The bronzed drongo (Dicrurus aeneus) is a small Indomalayan bird belonging to the drongo group. They are resident in the forests of the Indian subcontinent and Southeast Asia. They capture insects flying in the shade of the forest canopy by making aerial sallies from their perches. They are very similar to the other drongos of the region but are somewhat smaller and compact with differences in the fork depth and the patterns of gloss on their feathers.
This drongo is somewhat smaller than the black drongo and has more metallic gloss with a spangled appearance on the head, neck and breast. The lores are velvety and the ear coverts are duller. The tail is slender and well forked with the outer tail feathers flaring outward slightly. Immatures have their axillaries tipped in white. The young bird is duller and brownish with less spangling.
The nominate race is found in India and extending until the northern part of the Malay Peninsula. Specimens from southern India are however very similar in morphometrics to those from malayensis of Burma and the size variation may be clinal. The subspecies from China kwangsiensis is treated as synonymous with aeneus. Subspecies malayensis... Wikipedia →
Rare
Under 5% of wildlife watchers report a Bronzed Drongo sighting in Kolkata on a given day, based on 248 verified sightings from GBIF citizen-science data. It is the 114th most-seen of the 247 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
May
In that month about 10% of wildlife watchers report a Bronzed Drongo in Kolkata on a given day, against under 5% in June to April, the lowest months.
Between 4 and 7 am
Across all the parks we cover, that three-hour window holds the most Bronzed Drongo sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
8th of 15
Of the 15 cities where we can rate Bronzed Drongo sightings, Kolkata ranks 8th at under 5%. The best odds are in Thrissur (India, about 40%), Tamluk (India, about 30%) and Kozhikode (India, about 20%).
GBIF citizen-science records
It is estimated from how often the Bronzed Drongo is recorded against all the birds logged in Kolkata (248 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
