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12,5 cm. The male’s upper parts are dark gray. The face and a ribbon around the neck (the collar) are black. The posterior part of the throat, the belly and a narrow band around the eye are white, sometimes buffy. The color of the beak varies individually. The female and the Young males are brown with the inferior parts lighter. Distribution: From Bahia to Rio Grande do Sul, Uruguay, Argentina to Peru. Habitat: Grasslands, crops. They sleep in tall grass and sugar cane crops were they may bend the stems with their weight. Diet: Feeds on grains. Follows the expansion of seed producing grasses, thus invading new areas as the Distrito Federal. Frequently eats arthropods such as insect...

Scalar image showing the condensation of the DNA since the chromosome stage passing through chromatin level which represents the DNA rolled in histonas, until the double ribbon of DNA

Physical appearence: 12cm. The upper parts are grayish with black and ferruginous stripes The chest is light brown with spots in the immature. There are yellow ribbons above the eyes and in the wings. The coloration may change when it is dirty due to contact with earth. Distribution: The Grassland Sparrow is found east of the Andes from Colombia to central Argentina but is missing from the Amazon Basin upstream from the Tapajós river. Habitat: Dry fields with grass, cerrado and crops. Diet: Feeds on grains and small insects. Reproduction: During the breeding season they live in pairs in a territory defended by the male. The nest is opened and placed on the ground. The eggs are s...

35cm Identification: the head is dark with a bege band on the eyebrows and another one on the neck. The throat is white, but unlike Falco rufigularis this ribbon is not extended up to the back of the neck. The chest is light brown with black dots, unlike Falco deiroleucus which presents this region orange. The belly is dark with white spots and there is a red patch near the tail. The tail is dark with three white bars. It is one of Brazilian commonest falcons since it inhabits open landscapes, included those disturbed by men. Feeds on small rodents and birds, reptiles and large insects. Like other falcons these are monogamous birds with fixed breeding grounds. The nest is built o...

13,5cm The most distinguishing features of this species are the yellowish-orange head and the grayish-green body. This shades of color may vary depending on the subspecies, given that this bird is distributed thoughout the tropical region South to the Amazon river and East to the Andes. There is also a curiously isolated population in the Orinoco river basin. It lives in secondary forest, forest edges and even in cities with plenty of trees. Spends most of its time in the canopy, rarely coming to the ground. This bird moves in a very typical way, climbing the branches in a fast zig-zag, up to the tip and then letting itself fall onto the base of the next branch. It feeds mainly on s...

11 cm. The body of the male is dark gray in the upper parts, with the face and anterior part of the throat black. The posterior part of the throat and the belly are white, as well as the spots on the sides of the head. The female is brown with the belly lighter. It is thinner than the female of the double collar seedeater Sporophila caerulescens, the tail is longer, the beak smaller with the inferior part buffy. The young individuals are also brown. Distribution: From Guianas to Argentina and Paraguay. In Brazil from the north to São Paulo, Mato Grosso and Goiás. Habitat: Grasslands, open fields, crops and secondary forest borders. Diet: Grains. Reproduction: The couple lives is...

Just like other seedeaters, it is practically impossible to tell this species apart from the brownish females, virtually identical to the other seedeaters’ females. Nevertheless the males present the chest and the head in black, the upper parts dark brown and the belly is yellow or beige. Its behavior is very similar to other seedeaters and may form mixed groups with other species when not breeding. It is less urban than the Double-collared and the Lined Seedeaters, being more common in grasslands and grain crops. May be raised as a cage bird. In the breeding season the couples split from the groups. The nest is a low bow made of grasses and the female usually lays 2 or 3 eggs.