Animal sex for black widow spiders can be risky business, here's a look at how the spiders do it.
if insects are also climbing to high altitude as a response to moonlight, or if insects are present at high altitude but become visible to the swifts in moonlight, then the swifts’ behavior could be a food tracking response. During the breeding season black swifts in Colorado feed opportu...
De Staso J, Rahel FJ (1994) Influence of water temperature on interactions between juvenile Colorado River cutthroat trout and brook trout in a laboratory stream. Trans Am Fish Soc 123:289–297CrossRef Decker LM (1989) Co-existence of two species of sucker, Catostomus, in Sagehen Creek, Cal...
Considered some of the most venomous spiders in the world, black widows are notorious for their toxic bite. The red hourglass-shaped mark on the female's underside warns would-be predators such asbirdsto stay away, unless they want their next meal to be their last. But how do black widows...