Search results
Results from the WOW.Com Content Network
Avian foraging refers to the range of activities and behaviours exhibited by birds in their quest for food. In addition to their unique body adaptations, birds have a range of described behaviours that differ from the foraging behaviours of other animal groups. According to the foraging habitat, birds may be grouped into foraging guilds ...
The birds were first trained on a limited set of paintings. The experiment has shown that a pigeon was able to obtain food by repeated pecking when shown a painting from Picasso; when it was a Monet, pecking had no effect. After a while, the pigeons would only peck when shown Picasso paintings.
The birds then congregate in massive flocks made up of several different species for migratory purposes. Some birds make use of teamwork while hunting. Predatory birds hunting in pairs have been observed using a "bait and switch" technique, whereby one bird will distract the prey while the other swoops in for the kill.
The 500 line segments defined above together form a shape in the Cartesian plane that resembles a bird with open wings. Looking at the line segments on the wings of the bird causes an optical illusion and may trick the viewer into thinking that the segments are curved lines. Therefore, the shape can also be considered as an optical artwork.
The four pigments in a bird's cone cells (in this example, estrildid finches) extend the range of color vision into the ultraviolet. [1]Tetrachromacy (from Greek tetra, meaning "four" and chroma, meaning "color") is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cell in the eye.
Providing birds with a safe and warm space is just as vital as extra food at this time of year. "Robins often use nest boxes as roosting sites during the winter, so putting up a suitable nest box ...
Ingredients to Use for Natural Food Coloring. Penguin Random House. The world is your proverbial oyster when it comes to the foods that you choose to achieve every color of the rainbow. Schreiber ...
Birds were one of the first animal species tested on their number sense. A raven named Jacob was able to distinguish the number 5 across different tasks in the experiments by Otto Koehler. [ 5 ] Later experiments supported the claim of existence of a number sense in birds, with Alex , a grey parrot, able to label and comprehend labels for sets ...