Blackbirds are wonderful small birds belonging to the order Passeriformes, the genus of Short-billed. A feature of this bird is its musical, or rather, singing ability. The appearance of a thrush, as a rule, is not very catchy. The color of the feathers can be a noble brown or light olive with dark brown dots. However, there are also black birds with small bright spots on the tail.
Thrush eggs are painted by nature itself in amazing colors and shades - from blue to light green. Rarely do they have a solid color. The presence or absence of speckles on the eggs indicates that a certain degree of pigmentation is observed in the structure of the eggshell. In the process of egg development, pigmentation is formed due to the concentration of a substance such as protoporphyrin. It is a powerful photosensitizer and contains molecules that are capable of not only absorbing light from the sun's rays, but also processing it into oxygen, light and heat, which are so necessary for the healthy development of chick embryos.
Today in Russia there are 46 species of blackbirds. Each species has its own egg color. The thrush of one species is easy to distinguish from another. The differences in the shape, color and pattern of the eggs are not radical, but still exist. Thrush eggs, photos of which are presented here, have different color shades, blotches and size. Some are larger and elongated, others are round and small. Here are some examples of egg color.
The American Thrush of Swanson has a standard color for all lightbirds, with one difference - the top of the head, tail and tips of the wings have a reddish tint. His eggs are blue with brown dots. This bird nests in the form of a large ball of dried blade of grass. The blue color of the eggs of the American thrush, as well as other species, has always attracted the attention of ornithologists with its brightness. Background blue color is unusual in its shades: greenish, grayish and bright turquoise. And the spots are very clear, brownish-rusty. They have different sizes: from microscopic points to spots with a pinhead.
Hermit Thrush. This bird is very modest, likes to hide from prying eyes among the branches. Its discreet color is more brown, and a blurry spot is drawn on the chest. The eggs of the hermit thrush are monophonic, without specks, have a delicate greenish-blue color. Hermit thrushes nest among tree branches so that the sun's rays can reach them as much as possible, nourish them with their light and heat.
Songbird The size of this population is quite large. The color of the bird is dominated by weak olive and gray shades, with specks of the color of dark chocolate. Egg laying is either bright turquoise with dark specks of small size, or pale gray-blue in color with small brown spots. Speckles are often colored in the color of dark chocolate. They differ in size: these can be very small spots, or slightly larger - the size of a match head.
Blackbird: it always looks solid, having a black plumage, a yellow beak and yellow, orange or
red rims drawn around the eyes. It differs from other blackbirds in larger sizes. Thrush eggs
have a green color, close to a dark
olive color, with light brown spots. There are also eggs with a background of a grayish-green hue, with larger
chocolate-colored specks
. On the wide side, each egg is completely stained with brown pigment.