Persistent attempts by a male Calliope Hummingbird, Stellula calliope, to copulate
with newly fledged conspecifics.
For subjects in the paired group, the block was lowered to the cage floor and after a 30-s interval, the door to the side cage was opened, and subjects were allowed to copulate
with the model for 5 min.
However, male golden-cheeked warblers are frequently observed guarding their mate during construction of nests and egg-laying, but, once incubation begins, the males are observed in the territories of other pairs closely following and attempting to copulate
with another female as she constructs a nest (R.
Ellis and Johnson found that male bombyliid flies tried to copulate
avidly with flowers whose petals most resemble female flies.
In such species, females bond with one male at the beginning of each breeding season, but genetic studies of offspring indicate that females often copulate
with other males on the sly.
The consequence of this for the females is that they copulate
less frequently, since the males often follow the trails of other males and must therefore spend twice as long looking for a female.
President Clinton, of the USA To copulate
, he finds interns
Washington, March 18 (ANI): Agricultural researchers at the Hebrew University of Jerusalem are developing an improved method for sustainable pest control using "super-sexed" but sterile male insects to copulate
with female ones.
When a female received injections of PGE2 shortly after birth, bolstered with testosterone during adulthood, she exhibited malelike sexual behavior, such as trying to copulate
with fertile females, and a masculine-style preoptic area chock-full of synapses.
But at least Ms Adams managed not to copulate
for the nation.
When the spines were removed, the males experienced drastic reductions in ability to copulate
and ability to compete against rival males for mates.
The females thus become more like their male partners, who retain a lifelong willingness, to copulate
with with any potential mate that moves.