Title: White bellbird
Content:  Although the white bellbird is an uncommon bird, its total population is estimated to be large. The population may be in slight decline because of deforestation, but not at a fast enough rate for it to be considered threatened, so the International Union for Conservation of Nature has rated its conservation status as being of "least concern".
Title: Pale-eyed blackbird
Content:  Although it has a very small range, the total population of the pale-eyed blackbird, at over 10,000 mature individuals, is believed to be stable and the bird seems to be facing no particular threats, so the International Union for Conservation of Nature has assessed its conservation status as being of "least concern".
Title: Unicolored blackbird
Content:  The total population of the unicolored blackbird, at over 10,000 mature individuals, is believed to be stable and it has a very wide range. It is a fairly common species but its distribution is somewhat patchy. The bird seems to be facing no particular threats and the International Union for Conservation of Nature has assessed its conservation status as being of "least concern".
Title: White-bellied go-away-bird
Content:  The population of white-bellied go-away-birds has not been quantified. Its conservation status is stated to be "of least concern". This is because the population is not believed to be below 10,000 mature individuals and the bird has a wide distribution of over 3 million km2, meaning it does not meet vulnerability criteria. Furthermore, the population appears stable and not to be in decline.
Title: Blue manakin
Content:  This bird has a very wide range, is common and is presumed to have a large total population. The population trend is thought to be stable and the International Union for Conservation of Nature has rated the bird's conservation status as being of "least concern".
Title: White-bearded manakin
Content:  This bird has a very wide range, is fairly common and is presumed to have a large total population. The population trend is thought to be stable and the International Union for Conservation of Nature has rated the bird's conservation status as being of "least concern".
Title: White-collared manakin
Content:  This bird has a very wide range, is fairly common and is presumed to have a large total population. The population trend is thought to be stable and the International Union for Conservation of Nature has rated the bird's conservation status as being of "least concern".
Title: Blue-backed manakin
Content:  This bird has a very wide range, is fairly common and is presumed to have a large total population. The population trend is thought to be stable and the International Union for Conservation of Nature has rated the bird's conservation status as being of "least concern".
Title: Blue-crowned manakin
Content:  Blue-crowned manakins experience high nest predation rates with 70% of nests failing due to predation. It is estimated that only 7.5% of nests successfully fledge young. It is uncertain how blue-crowned manakins maintain population size with such a low rate of success, but it has been speculated that high female survivability and multiple breeding attempts per season may be a factor. Blue-crowned manakins can get infected with haemosporidian parasites. A genetic study revealed that half of the sampled manakins were infected with blood parasites, representing nine different types. Young individuals had higher infection rates compared to adults.
Title: Golden white-eye
Content:  nightingale reed warbler. All three species are insectivorous and were theorised to have declined due to habitat loss. Nevertheless, the species remained relatively abundant, and the current world population is estimated at around 71,997 birds. The species is nonetheless evaluated as Endangered by the IUCN because the population is expected to undergo a rapid decline if the brown tree snake becomes established on Saipan. The primary threat to this species is the brown tree snake, a native of Australia, New Guinea and the Solomon Islands, which eliminated all 12 landbird species on nearby Guam after being accidentally introduced. The snake has not yet become established on Saipan, one of the two islands that compose the range of the golden white-eye, and which holds the largest population of the species. The isolation 

Question: what percentage of the population is naturally blonde?
Answer: 2%.