"Calvin Klein's Obsession," said Roni, leaning round from the front seat of the 4x4. "That's what they use in Guatemala. They put it on a tampon and leave it near the camera traps." The car lurched over the pitted, clay-red road and he turned back to squint through the dust-caked windscreen. Scattered pines spiked to the left and right, flame-blackened survivors of forest fires and southern pine beetle plague. Above us, vultures circled. "Seriously?" I asked. "Seriously," he replied. "But I don't know if it works."
Roni Martinez is conservation officer at Blancaneaux Lodge, a gracious bit of tourism infrastructure in a particularly peculiar part of Belize. Take those pines, for example. Much of this country is clad in broad-leaf rainforest, damp and exotic, full of orchids and bromeliads, strangler figs, vines and creepers. Huge palms stretch upwards. Ferns shoot sail-like fronds up to the canopy. Below all the dripping vegetation lies soft limestone, riddled with caves and cenotes, once thought by the ancient Mayans to be the gateways to the underworld.
However, the area around Blancaneaux, known as Mountain Pine Ridge Forest Reserve, is a geological oddity. It's a huge granite massif, which means acid soil: no good for rainforests, but perfect for the Honduras pine, with its long, elegant needles. There's still plenty of moisture around, but the hard bedrock sees the rains flow straight off the land into rivers: the Macal, Rio Frio, Rio On and Privassion Creek, which flows past Blancaneaux in cascades of swirling brown.
It's as if 200 square miles of Scotland have been displaced to Central America, pumped up with sunshine and hung with termite mounds and wasps' nests. The off-kilter familiarity is all the more intriguing when you learn that hiding among the pines, securely camouflaged in the dappled shade, are jaguars, the largest of Belize's five wild-cat species. Elusive, magnificent, spotty, they dine on armadillo and paca (a kind of burrowing rodent). They are also, according to Roni, attracted to Calvin Klein's iconic fragrance. Or not, of course.
Let's get this out of the way now: I failed to spot a jaguar during my time in the wilds of Belize, and it is highly likely that should you visit, you will fail to spot a jaguar too. Neil Rogers, a tourism consultant who has a long association with Blancaneaux Lodge, has been coming to Belize since 1989. He has never seen a jaguar in the wild. He can spot big cat tracks, though, at one point asking Roni to stop the 4x4. We all crouched next to a set of sizeable paw prints, with parts of a dismembered grey fox nearby, the jawbone gleaming pale against the red earth. Paw prints, then, but no paws: you're about as likely to see an E-Type cavorting over these rutted trails as you are to see the real thing.
According to Roni, the odds don't improve particularly should you be keen to spot any of Belize's other wild felines: the puma (pale and interesting), the jaguarundi (like a big red house cat), the ocelot and the margay (both spotty, but smaller than jaguars). On a cat-scanning night walk close to the lodge, the rain hissing on the canopy above, we saw nothing bigger than butterflies and leaf-cutter ants.
It's all very different in the morning, though, when Belize hits you right between the ears. Round here, dawn breaks with what sounds like a flock of squeaky garden gates passing overhead. Then some clicks, some whoops and the beginnings of free-form jazz noodlings: clarinet trills, trumpet calls. The local bird-life is awake, abundant and demanding your attention.
Fuelled up on coffee and a determination to see Belize's national icon, the keel-billed toucan, I met up with Geraldo Garcia, a guide at the lodge, for a 6am birdwatching session. Geraldo made up for my non-existent twitching skills with a running commentary on what we were seeing and hearing. Those squeaky gates? Red-lored parrots: green, with a vivid scarlet patch above the beak. The jazz-player? A melodious blackbird, as giddy with song as it was understated in dress.
Serious birders compile Life Lists of all the species they ever encounter – and if you want a head start, Belize is the place. The names came in a rush from Geraldo, like creatures from a Roald Dahl children's story: the yellow-winged tanager, the red-legged honeycreeper, the black-headed saltator, the boat-billed flycatcher. We saw a yellow-bellied sapsucker drilling holes in the lodge's almond trees, a golden-hooded tanager perched on the green spread of a vast cecropia. Plain chachalacas rustled in bushes near the swimming pool, like small turkeys. Hummingbirds, magnolia warblers, the masked tityra ... blink behind your binoculars and you'd missed another exotic flash of colour.
The green jays were my favourite, with their lemon-and-lime two-tone bodies and blue heads. No toucan, though. Geraldo was apologetic: he'd find one for me, he said. Just wait. I found it easy to believe him. After all, in an hour we'd seen dozens of bird species, yet we'd walked no more than a couple of hundred yards from my empty coffee cup.
With the rising sun came a chance to explore the lodge itself. The property is owned by Francis Ford Coppola Resorts, part of an empire built up by the film-maker that stretches from wineries in Napa Valley to hotels in Italy via a literary magazine and a range of pasta sauce. The director of Apocalypse Now! and the Godfather trilogy also owns Turtle Inn, which brings barefoot luxury to the coast of Belize, and La Lancha in Guatemala, for those keen on a close-up of Tikal, one of the largest excavated Mayan sites in Central America.
Blancaneaux makes a captivating retreat: 20 thatched two-room villas and single-room cabanas set up on stilts and spread along one bank of the river, next to a churning waterfall. The resort has its own airstrip for those keen to avoid the often dubious roads nearby. Most of the power comes from a hydro-electric system just below the property. Inside the rooms, the emphasis is on simplicity: dark mahogany floors and hand-made tiles in the bathrooms; trinkets sourced by Coppola and his wife on their travels in the Philippines, Mexico and Bali. There's no TV, mobile phones don't work, the Wi-Fi is sporadic. But you haven't come here to stay connected to the outside world. (And if you're desperate, there's always the "shellphone", a large conch shell in your room that's wired to reception. Ordering coffee to your riverside veranda is immediately invested with added comic appeal.)
It seems odd to be recommending the pizza, but seriously: try the pizza. The wood-lined Montagna Restaurant features traditional Italian dishes based on Coppola's family favourites. He's very specific about his wood-fired, thin-crust margheritas, apparently. For local flavour, there is the Guatemaltecqua Restaurant by the pool, serving Guatemalan dishes such as salpicon (shredded beef salad) and jocon (chicken cooked with herbs and spices). Everything is made using produce from a two-acre organic garden that rises in great tiers of fruit and veg, all ripening furiously in the tropical heat.
Blancaneaux seems intent on stripping out the frippery of a luxury hotel and focusing on the important things: splendidly comfortable beds, a hot-water bottle at night, locally sourced unguents placed on palm leaves in the bathrooms. Each evening, guests choose their preferred activities for the next day: horse-riding, perhaps – Blancaneaux has its own stables – or taking one of the complimentary mountain bikes to Big Rock Falls, where you can swim in the deep, dark pools.
The conservation element is important, too. During my visit Roni was in the process of his annual audit of the local jaguar population, checking more than 80 camera traps (automatic infra-red devices that take a photo when they sense movement nearby). Neil and I joined him, our 4x4 often struggling over old logging roads that have been left to dissolve back into the landscape. "There's nowhere else like it," said Neil. "It's you and the environment. It's very unusual that tourists ever come here."
The camera traps revealed their prizes. No jaguars today, but puma, margay ... and several close-ups of tapirs' bottoms.
Belize is a cultural and historical oddity: the only part of Central America that has English as its national language, a relic of its time as British Honduras. Even after independence in 1981, British troops underwent jungle training here; their bullet cases are easy to find, scattered on the jungle floor. Now, though, Belize manages its security alone, and the ruler-straight border with Guatemala isn't far away. Belize has an uneasy relationship with a larger neighbour that has long coveted its shoreline as well as the riches of its rainforest. According to Roni, Guatemalan xateros cross the border to take fish-tail palms for the florist industry, but will also harvest rare birds eggs while they're here. Endangered scarlet macaws nest close by in Chiquibul National Park, monitored by Roni and his colleagues.
For tourists, though, days in the jungle are occupied by birdwatching of a more leisurely kind. Later, I spied a pair of white hawks from an escarpment overlooking the Rio On, their wide feathers tipped with black. And left and right at the roadside, raptors of all kinds perched on lightning-blasted tree stumps, or watched unafraid from unstrung telegraph poles.
Close to Blancaneaux, the Thousand Foot Falls are reputed to be the longest in Central America, though at 1,600ft they are in fact victims of understatement. On the day I visited, a shining band of water poured down through the mist, occasionally blanketed in cloud. Even more impressive was Caracol, Belize's largest Mayan archaeological site, which was once a rival to Tikal. The main temple rises 136ft from the jungle floor; it is still the tallest man-made structure in Belize. However, the statistics fail to do justice to the living history here. Graceful ceiba trees rise from crumbling terraces, their buttress roots stretch like fingers over the stone; howler monkeys roar close by. There were surprisingly few tourists, too. Half-shut your eyes and Caracol lives again.
And then, on the last hour of my last day in the rainforest, Geraldo jammed on the brakes, yanked me out of the 4x4 and pointed to a cecropia tree by the roadside: finally, a keel-billed toucan, its bright beak startling against the green foliage. Time to start that Life List.
There are no direct flights from the UK to Belize. Ben Ross travelled with American Airlines (0844 499 7300; aa.com) which flies from Heathrow to Miami, with onward connections to Belize City (overnight stay required outbound). From £722 return.
Blancaneaux Lodge, San Ignacio, Belize (00 501 824 4912; coppolaresorts.com), has garden-view cabanas (sleep two) from $319 (£200) per night including breakfast. Guided activities are extra.