This roost is visited primarily by two Aratinga species - Pacific Parakeet and Red-throated Parakeet. The former roosts there in the hundreds and hundreds, while the latter is usually encountered as scattered individuals here and there for a total of 10-20 birds. Because the two species are very similar and difficult to distinguish in flight, it is likely that the actual number of Red-throated Parakeets roosting there is a little higher, several tens perhaps.
A guard at the UCA told us that he has seen larger species - parrots - among the parakeets. We did not detect any Amazona parrots using the roost, although we did see two pairs of Amazona sp. fly high over the roost a little after 6 PM, when most parakeets had already arrived at our roost. When we arrived at the roost site, we saw a pair of Orange-chinned Parakeets, a much smaller species that does not roost in large groups, but is commonly found throughout the city.
|Red-throated Parakeets grooming each other|
As I said in the previous post, count results will be shared with parrot researchers at the universities of Leiden and Heidelberg.
Note that taxonomy of the Aratinga genus is still somewhat unclear - at least to me. Some sources consider strenua to be a subspecies of Aratinga holochlora (Green Parakeet), others claim it's a species in its own right (Pacific Parakeet). Some consider Aratinga rubritorquis (Red-throated Parakeet) to be its own species, others claim it is a subspecies of Aratinga holochlora.