Search results
Results from the WOW.Com Content Network
The butterflies arrive at their roosting sites in November. They remain in roosts atop volcanic mountains on oyamel fir trees (Abies religiosa) during the winter months and then begin their northern migration in March, back to North America and southern Canada. Two to three generations of monarchs complete the migration north.
Insect winter ecology describes the overwinter survival strategies of insects, which are in many respects more similar to those of plants than to many other animals, such as mammals and birds. Unlike those animals, which can generate their own heat internally ( endothermic ), insects must rely on external sources to provide their heat ...
Butterflies are considered a keystone species; their residence in a habitat is a key indicator of the health of the ecosystem. [39] Butterflies serve a multitude of purposes within an ecosystem including promoting genetic diversity [40] through pollination and serving as a food source for many birds.
After wintering in Mexico, the butterflies fly north, breeding multiple generations along the way for thousands of miles. The offspring that reach southern Canada begin the trip back to Mexico at ...
Federal wildlife officials on Tuesday proposed protecting the striking long-distance migrators under the Endangered Species Act after dramatic population drops.
Many migrating butterflies fly at low altitudes. The airspeeds in this region are typically lower than the flight speed of the insect, allowing them to travel against the wind if need be. These 'boundary-layer' migrants include the larger day-flying insects, and their low-altitude flight is easier to observe than that of most high-altitude ...
The black-and-orange butterflies are spending the winter soaking up some California sunshine. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ...
Lepidoptera (/ ˌ l ɛ p ɪ ˈ d ɒ p t ər ə / LEP-ih-DOP-tər-ə) or lepidopterans is an order of winged insects which includes butterflies and moths.About 180,000 species of the Lepidoptera have been described, representing 10% of the total described species of living organisms, [1] [2] making it the second largest insect order (behind Coleoptera) with 126 families [3] and 46 superfamilies ...