The Merri Creek trail runs along the revegatated Merri Creek, from Coburg Lake right down to where the creek runs into the Yarra near Dight's Falls. For a dribbly little creek running through inner Melbourne, you get a great variety of birds - along with the usual ducks, coots, sparrows and pigeons, you can see up to five different parrots, kookaburras, kingfishers, a handful of honeyeaters, and the occasional raptor. For the optimal birding, it's worth walking the whole thing - I've seen black swans, little lorikeets and musk lorikeets around Coburg Lake and a white-necked heron between Coburg and CERES.
Still, if you're breakfasting at CERES and only have a couple of hours, you can just wander out the back gate and start your stroll there. Throughout the walk you'll see plenty of the common city birds: house sparrows, red wattlebirds, magpie larks, feral pigeons, spotted turtle-doves, rainbow lorikeets, willie wagtails and mapgies. The back section of CERES is one of the best strips on the walk. It's best to leave the northernmost CERES gate and mosey your way south. It's here that CERES' semi-famous sacred kingfishers take up residence most summers.
This spring there's also been an olive-backed oriole pair nesting in a branch overhanging the creek.
You're almost guaranteed to see little wattlebirds, white-naped honeyeaters and new holland honeyeaters in this section of the walk, along with the occasional hardhead and little pied cormorant on the water. This is also a good place to see Eurasian tree-sparrows. If the wagtails and the magpie larks are making lots of noise, it's worth scanning the foliage for a sparrowhawk - they often patrol this section of the creek, pouncing on sparrows and other small birds.
As you come around to the southern entrance to CERES, you come to a section of the creek which is overrun with bell miners. Just past this strip, you'll come across a few shrubby garden-beds alongside the creek - these are usually chock-full of superb fairy-wrens, along with the occasional white-browed scrubwren. There's also a thicket of trees just south of CERES that's usually bursting with new holland honeyeaters - I've chanced across a crested shrike-tit amongst them a couple of times.
For the next little while the walk is mostly about the pleasant scenery - as you meander through Northcote and Fitzroy North, the birdlife reverts to common mynahs and feral pigeons - although it's worth keeping an eye out for crested pigeons and white-faced herons along the way.
As you approach the Yarra around Dight's falls, things start getting interesting again - before you reach the main Yarra trail there's a rocky section of path along the creek where red-browed finches nest. This strip of the creek often has little black cormorants and laughing kookaburras hanging around. If you're full of energy, the walk right through Yarra Bend Park to Studly Park Boathouse is well worth the extra half an hour or so, with grey butcherbird, nankeen night-heron, red-rumped parrot, Eastern rosella, galah, sulfur-crested and yellow-tailed black cockatoo and black-faced cuckoo-shrike all a chance.
By the time you get to Studley Park, you'll have been walking for at least a couple of hours.