Directions (8-16): Read the following passage and answer the given questions.
In recent years, the population of pigeons in urban areas has swelled significantly, raising concerns about
the health risks they pose. Studies indicate that pigeon populations in major cities have increased by over
30% in the past decade, largely due to human feeding habits and the lack of natural predators. These birds,
often seen flocking in public squares, rooftops, and balconies, have adapted remarkably well to city life.
One of the primary reasons for their unchecked growth is the continuous feeding by humans. In places like
London and New York, feeding pigeons has led to colonies numbering in the hundreds of thousands,
creating sanitation and health challenges.
Pigeons are not just harmless city dwellers; they bring with them a host of potential health risks. They build
their nests in ______________________ of our homes, leading to an accumulation of droppings, feathers, and
parasites. Research from the Centers for Disease Control and Prevention (CDC) states that pigeon
droppings contain over 60 types of pathogens, including fungi, bacteria, and viruses. These pathogens can
cause respiratory diseases like histoplasmosis, cryptococcosis, and psittacosis, particularly in individuals
with weakened immune systems. Additionally, pigeon droppings are highly acidic, leading to the gradual
erosion of buildings, monuments, and infrastructure.
One of the biggest concerns is the spread of mites, ticks, and fleas from pigeons to humans. A study
conducted in Barcelona in 2022 found that 70% of pigeons carried ectoparasites that can infest homes and
trigger allergic reactions. Furthermore, their presence in large numbers contributes to increased airborne
allergens, worsening conditions for people with asthma or respiratory issues.
Efforts to control their population should focus on reducing their dependence on human feeding and
making nesting areas less accessible. Many cities have started implementing deterrent measures such as
installing anti-roosting spikes, netting, and automated bird-repelling devices. Some regions, like Venice and
Singapore, have introduced fines for feeding pigeons, leading to a 25% reduction in pigeon numbers over
five years.
The unchecked growth of pigeon populations is like a battery of problems waiting to explode. If we do not
take preventive measures, we might find ourselves caught in a thread of complications that could have
been easily avoided. It is time to address this issue seriously, balancing conservation with public health and
urban hygiene.
Q12. Find the word similar in meaning to "thread" as used in the
passage.