Visited: all year round
Recommendation: When ever you visit the cay, you are guaranteed a thrilling time. There are often thousands of birds here and you can get very close to them. It is very exposed, so go in cooler months.
Michaelmas Cay is a small sand bar in the ocean east of Cairns. A short 45 minute boat ride will get you there and normally I am the only birder on board. Situated on the Great Barrier Reef, most people go snorkelling to see the reef and marine animals. The boat operators are always really helpful and take me onto the Cay in a small boat. There is only a small patch of sand that you can stand on to look at the birds. I have been at different times of the year but the best I found was in the spring when the birds have returned to nest and it is not yet too hot.
There are some birds that visit to roost as well as those that actually nest on the Cay and at its peak of activity, it is frantic. I had a hard time deciding where to look and what to take photos of. So, I'll start with those birds obviously nesting and regular visitors to the sand. The Brown Booby were there in numbers and there were lots of juveniles in various stages of development and plumage. Even the larger, older ones were fairly sedentary, just sitting waiting for a parent to return to them. I loved looking at them in their different states of dress. I had never been as close to these kind of seabirds before.
Brown Booby (Sula leucogaster)
Common Noddy were also nesting on the beach and this time I found some with eggs. I always think noddies look very serious with those eyebrows. It is worth going at different times of the year so you can see these attractive birds courting, nesting and rearing chicks.
Common Noddy (Anous stolidus)
There were hundreds of terns on and around the sandbar. The Great Crested Terns congregated on one side and were largely all adults while the Lesser Crested Tern were on another and interestingly seemed to have a nursery for their chicks.
Great Crested Tern (Thalasseus bergii)
Lesser Crested Tern (Thalasseus bengalensis)
There were several other terns around but nothing like the numbers of the crested. I saw the Bridled, Little and Sooty either on the beach or circling it.
Bridled Tern (Onychoprion anathetus)
Little Tern (Sternula albifrons)
Sooty Tern (Onychoprion fuscatus)
In amidst all this noise and choas I was quite amazed to spot a Red-footed Booby. It was sitting and then flew around but however brief it was, I was thrilled to see it.
Red-footed Booby (Sula sula)
There were also several Great Frigatebirds here as well. I always think they look like prehistoric creatures. Surely they are descendants of the Tetradactyl!
Great Frigatebird (Fregata minor)
You can also find the weird and wonderful Nudibranchs here. These unusual creatures are renowned for their extraordinary beauty and dazzling array of colours and patterns. They come in virtually every colour imaginable, from bright purples and vivid blues to fluorescent oranges and intricate spotted or striped designs. These vibrant colours often serve as a warning to potential predators that they are distasteful or toxic.
Their body shapes are also incredibly diverse. Some have a cluster of feathery gills on their backs, while others have finger-like projections called cerata all over their backs. On their heads, they have a pair of prominent, often club-shaped or ear-like tentacles called rhinophores. These are highly sensitive chemosensory organs, used to smell or taste chemicals in the water, helping them locate food and mates.
Giant Yellow Nudibranch (Notodoris minor)
I see Lionfish here as well. They are a genus of highly recognizable and often dramatic-looking marine fish, primarily known for their striking appearance and venomous spines, which makes them easily identifiable. Lionfish do come in different colours and patterns, although the overall theme of bold stripes against a paler background remains consistent. The most common colour combinations involve red, brown, or maroon bands/stripes against a white, cream, or pale background.
Interestingly, Lionfish can also slightly change their colour intensity or shade based on their mood, stress levels, time of day, or to better blend into their surroundings. For example, they might darken their colours when agitated or interacting with other fish, or become paler at night or when resting. While the zebra-striped appearance is characteristic of most lionfish, the specific shades of red, brown, black, and white, as well as the patterns of their spots and bands on their bodies and fins, can vary significantly between species and even individual fish.
Lionfish (Pterois volitans)
Pink Anenomefish (Amphiprion perideraion)
Red and Black Anemonefish (Amphiprion melanopus)
A huge draw to Michaelmas Cay is also the opportunity to scuba dive or snorkel along the top of the Great Barrier Reef. A common sight are various Anemonefish. From the iconic Clownfish to the dramatic Red and Black Anemonefish, they are colourful and wonderful to see and photograph.
The family of Anemonefish contains around 30 species and up to 12 can be found in the waters around Cairns and the Great Barrier Reef. They have a symbiotic relationship with the anemone that makes them immune to their venom.
Spine-cheeked anenomefish (Amphiprion Premnas) biaculeatus)
Clownfish (Amphiprion percula)
The Red Fire Goby are small fish that are known to hover into the current just above their burrow entrance, waiting for food to drift by. When startled, they exhibit a characteristic darting motion, quickly retreating backwards into their burrow or a nearby crevice. This is a primary escape mechanism from predators.
They primarily inhabit the outer reef slopes, particularly in areas with rubble or sandy bottoms. They can be found at depths ranging from 6 meters to 70 metres, though they are most common in shallower parts of the upper reef slopes.
Red Fire Goby (Nemateleotris magnifica)