Also known as Alegrinho, whistles-dog, niggling (Pernambuco) and Pope-mosquito. The laugh is a passerine bird in the Tyrannidae family and also one of the most common birds in many different environments. It occurs from the Amazon forest to field area with bushes around the country, adapting to urban environments with some trees.
It measures about 9.5 centimeters. Watching the bird, you can see that the head is a little more gray than the back, slightly greenish (that the new sentence, after the changes made between January and March, later gray). Also with the new feathers, highlight the eyebrow white stripe. Behind the eye, dark line, thin, emphasizes the long eyebrow. Dark beak at the tip and orange base, marked in most of the observations. Usually bristle the top of the head feathers, forming a semi-tuft, with unkempt appearance; other times, flattened feathers against the head, giving rounded aspect to this area. Yellowish belly (new pen, with wear, gray) and two stripes on the wings, more brownish after the changes and faded after a while, getting yellow or gray.
Hunting and invertebrates feed on fruit.
It features a reproductive period, which runs from July to December. The spherical nest, built with plant matter, has a side entrance and holds firmly to the branches.
Small, trusted, is always moving up enough, from the treetops most outstanding until close to the ground. Learn to identify it and aids in meeting the other species of small tyrant flycatchers, similar in shape, color or have near corners. Besides the size and behavior, outstanding feature is the corner. The most striking form is a sequence of high notes, high, descendants and they seem a laugh (origin of the common name). There is some variation in the time of issue, probably individual characteristic. Singing from dawn until dark. Have other calls, one of them remembe