Sentence examples for failed to breed from inspiring English sources
Independent tracking and breeding success data from Crozet and Kerguelen showed that the birds failed to breed in those years when the front temporarily moved too far south, he told BBC News.
Hen harriers are close to extinction in England after the country's only two nesting pairs failed to breed, conservationists have said.
The pandas failed to breed in 2012 but the zoo is using thermal imaging technology to monitor the pair this time - a world first.
The first accurate census in 1917 found 25 pairs and the last pair failed to breed around 1955.
We selected those S individuals randomly, resampling with replacement, and calculated all matrix elements according to the fates of the selected individuals (whether they lived or died, bred or failed to breed and, if they bred, the number of offspring they produced, drawn from the relevant likelihood distribution).
One pair failed to breed within 15 days and was removed from the experiment.
In the warmest years, birds can fail to breed altogether and large numbers of adults can die of starvation.
How could such seeming selflessness evolve, when it is exactly those individuals that are behaving altruistically that fail to breed and thereby pass their selfless genes along?
"They will not have energy or time to find new sites so many may fail to breed". Packham welcomed protests by members of the public on social media.
Consider some small reptile that fails to breed because a flood creates a barrier across its habitat that it cannot cross and there are no available mates on its side of the barrier.
