The Great Cormorant (Phalacrocorax carbo) is a very common and widespread member of the cormorant family of seabirds. It is found on every continent except South America and Antarctica.
The species breeds along rocky maritime coasts, nesting on cliff ledges or rocky islands free of predators, and feeding in sheltered inshore waters.
In the past, Great Cormorants migrate to Peninsular Malaysia an possibly Singapore, but now only rare vagrants occur in Malaysia. In Singapore, there is/was however a population of Great Cormorants, escapees or free ranging birds from the bird park. They have been found residing at Kranji Dam, Sungei Mandai and Mandai mudflats near the estuary of the river. In 2004, there was a record of 11 birds seen at Kranji Dam1. Breeding is suspected as there were juvenile birds along with the adults.
The Grey-rumped Treeswift (Hemiprocne longipennis) is one of the two species of treeswift recorded in Singapore. The other, the Whiskered Treeswift is a very rare resident that is seldom seen, with only one recent record at Upper Peirce Reservoir in 2011.
The Grey-rumped Treeswift on the other hand is a more common resident in Singapore. They can be found regularly at the Singapore Botanical Gardens, Macritchie Reservoir and recently at Bishan Park. In April/May 2011, there was a nesting record in Mandai which I had a chance to document.
Both the male and the female take turns to incubate the egg. The nest of the egg is rather small and can only fit in one adult and one egg.
The male of the species has orange red/chestnut coloured ear coverts that this female lack. Both have an attractive crest.