Following Poachers Who Illegally Snare the Nation's Endangered Songbirds.
The activist's vision darts across vast expanses of dense fields, looking for signs of life in the inky blackness.
He speaks in less than a whisper as they attempt to locate a spot to hide in the fields. In the distance, the huge urban center of Beijing has yet to wake. As we wait, we hear only the quiet of the morning.
And then, as the sky begins to brighten ahead of sunrise, we hear footsteps. The hunters have arrived.
Snared
In the skies above us, a multitude of winged travelers, many so small that they could rest in the cup of a hand, are traveling to the south for winter.
They have taken advantage of the long summer days in Siberia, or Mongolia, feasting on bugs and berries. As the year comes to a close and chilling gusts bring the first frosts of winter, they journey to southern locales to find food and shelter.
The nation hosts over 1500 bird species, accounting for 13% of the global population – over eight hundred of those are birds that migrate. Several of the major flyways they follow cross through China.
This particular field where we were, on the edges of the Chinese capital, is an refuge for small birds – farther in and the urban landscape offer scant chance to rest among clusters of concrete.
It is also an oasis for the poachers and their "barely visible nets", so thin you can hardly spot them.
The trap we stumbled upon was strung across a large section of the field and propped up with wooden sticks. At its center, a meadow pipit was fighting hard to escape, but the more it struggled, the more its claws became tangled.
This was a protected songbird, a species under protection in China, and an important "indicator species" – which signifies if its numbers are thriving, so is its ecosystem.
Hunting the Hunters
This activist, performs this duty for free using his personal funds. He has given up on many nights of sleep to set songbirds free, and he has spent the last decade urging the police in Beijing to enforce the law.
"Back in 2015, authorities were indifferent," he remarks.
So he recruited volunteers who were concerned and launched a group called the Beijing Migratory Bird Squad. He organized public meetings and invited the officials of the relevant authorities. These small and persistent acts of advocacy seem to have paid off. The police discovered that catching poachers also helped in identifying other kinds of criminal activity.
"We found our objectives became partially aligned," Silva says, while pointing out that implementation remains inconsistent.
Silva's love of birds began during childhood. He grew up in the 1990s in a very different Beijing.
He recalls exploring the fields on the city's edges where he discovered birds, frogs and snakes. "However, beginning in the 2000s, the transformation was dramatic."
Rapid economic growth brought a huge influx of rural workers to cities. This fast-paced development meant grasslands were considered empty places to build, not conservation areas to conserve.
The transformation was alarming. The grasslands started disappearing, as did the habitats they supported.
"I made the choice back then to work in conservation and I chose this direction," he says.
It has not been an easy life. One of Beijing's biggest bird dealers discovered he was being investigated by Silva and fought back.
"He assembled several of his accomplices who confronted me and assaulted me," Silva recalls. He says he went to the police but those responsible were not brought to justice.
He has also seen the departure of his army of volunteers over the years. This work requires stealth and sleepless nights. Silva says few people are prepared for the difficult – and sometimes dangerous job.
"My life is devoted to this," he says. "I made it a project because if you want to address this major issue, you must devote yourself wholeheartedly. You cannot be half-hearted."
He says donations covers some of the costs – more than 100,000 yuan annually – but donations have dipped because of the slowing economy.
So he has developed new ways to track the poachers.
He analyzes aerial photos to find the trails created by the poachers. He charts these against the birds' migratory routes and looks for areas where they may stop for the night. The aerial views can even show lines of net traps which can capture hundreds of small birds at night.
"Certain prized species sell for a premium," Silva says. "In big cities like Beijing and Tianjin, those who want to keep birds are now quite wealthy."
Although there are wildlife laws in place, Silva reckons the fines to deter the activity do not outweigh the potential profits of catching and selling songbirds.
Keeping a caged bird was – and for some people in China, still is – a status symbol. This originates from the Qing dynasty. Wealthy individuals would build ornate bamboo cages to display their birds.
It's a tradition that continues mainly among older individuals in their 60s or 70s. Silva says older Chinese people don't realise they are committing a wildlife crime, or grasp that so many more birds had to die in a trap for them to purchase a caged bird.
"These individuals often lacked enough to eat growing up. Now with a little money, they have inherited the habit and custom of keeping birds in cages," he says. "The nation progressed so fast, there was no time to educate people about ecology. Once adults' values are formed, they're really hard to change."
Disrupted
On a long low wall in Beijing, a trader has several tiny enclosures with tiny twittering birds.
A separate individual is positioned near a local market holding a bird cage shrouded in a black veil. He informs passers-by discreetly that his songbird is rare, worth nearly 1900 yuan.
This offers a view of an old Beijing where informal vendors have established a niche trade.
The path by the river stretches for several miles and on a sunny weekday morning, there were people looking at everything from vintage jewellery to dentures.
Information suggested that protected birds could be bought in a small park. It was easy to find.
Loud music played from a speaker under the low trees where a troop of elderly ladies were choreographing a fan dance. Nearby several men, all in their later years, had congregated with bird cages – some had two or three in their hands. Most were concealed by black fabric.
But on this occasion there would be no transactions because the police had arrived. They were interviewing the bird owners and recording details. Defiant, one man said he was {taking his caged bird for a walk|simply exercising his