Почему птицы не едят муравьев


Сегодня наблюдал как воробей бойко сожрал одинокого муравья, ползшего по асфальту.... возник вопрос а почему собственно птицы стаями не тусуются около муравейников (там где плотность муравьев уже недостаточна для эффективной обороны кислотой это же практически еда нахаляву, особенно где-нить в таежных лесах где муравьев дофига


было дело такое-же, сижу както на станции, жду электричку, в руке килограмм сосисек, вокруг голуби, делать нечего, час сидеть. Ну я и начал сосисками голубей кормить. Однако налетели и три сосиски просто влет съели. Отсюда родился вопрос, а откуда птицы знают, что мясо - вкусное. А потом сказал ктото ответ, а ониже гусениц едят, мотыльков, бабочек и все такое проее. Видимо муравьи в ту-же корзину...


Гипотеза. Муравьи в российских реалиях - малопитательные: мало калорий, много - токсинов.
Ant followers[edit]
Immaculate antbirds regularly attend army ant swarms in order to feed, but they are not obligate ant-followers; they also forage away from the swarms.
Swarms of army ants are an important resource used by some species of antbird, and the one from which the family's common name is derived. Many species of tropical ant form large raiding swarms, but the swarms are often nocturnal or raid underground. While birds visit these swarms when they occur, the species most commonly attended by birds is the Neotropical species Eciton burchellii,[18] which is both diurnal and surface-raiding. It was once thought that attending birds were actually eating the ants, but numerous studies in various parts of Eciton burchellii's range has shown that the ants act as beaters, flushing insects, other arthropods and small vertebrates into the waiting flocks of "ant followers". The improvement in foraging efficiency can be dramatic; a study of spotted antbirds found that they made attempts at prey every 111.8 seconds away from ants, but at swarms they made attempts every 32.3 seconds.[22] While many species of antbirds (and other families) may opportunistically feed at army ant swarms, 18 species of antbird are obligate ant-followers, obtaining most of their diet from swarms.[5] With only three exceptions, these species never regularly forage away from ant swarms. A further four species regularly attend swarms but are as often seen away from them. Obligate ant-followers visit the nesting bivouacs of army ants in the morning to check for raiding activities; other species do not.[23] These species tend to arrive at swarms first, and their calls are used by other species to locate swarming ants.[14]
Because army ants are unpredictable in their movements, it is impractical for obligate ant-followers to maintain a territory that always contains swarms to feed around.[5] Antbirds have evolved a more complicated system than the strict territoriality of most other birds. They generally (details vary among species) maintain breeding territories but travel outside those territories in order to feed at swarms. Several pairs of the same species may attend a swarm, with the dominant pair at the swarm being the pair which holds the territory that the swarm is in. In addition to competition within species, competition among species exists, and larger species are dominant. In its range, the ocellated antbird is the largest of the obligate ant-following antbirds and is dominant over other members of the family, although it is subordinate to various species from other families (including certain woodcreepers, motmots and the rufous-vented ground cuckoo). At a swarm, the dominant species occupies positions above the central front of the swarm, which yields the largest amount of prey. Smaller, less dominant species locate themselves further away from the centre, or higher above the location of the dominant species, where prey is less plentiful.[18]
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