Sentence examples for two breeding pairs from inspiring English sources

From each breed, two breeding pairs were selected based on divergent performance in four different fear tests conducted between 153-168 days of age.

Over five years, the hen harrier population exploded – from two breeding pairs to 21.

In the 1930s only two breeding pairs of red kites were known to survive in the British Isles, both in central Wales.

There were also concerns that with just two breeding pairs, if one or more of the females died, there would be a declining population.

What is more, the nocturnal spotted owls have responded: Muir Woods now has two breeding pairs instead of one.

"There are only two breeding pairs – only four birds – that have been there about 10 years, and they usually fledge only one or two chicks a year.

Thirty-three breeding pairs and 72 fledglings were counted last year.

The isle is teeming with red deer, otters and golden eagles – there are twenty breeding pairs here.

A UK-wide survey in 2008 then found only five breeding pairs had survived - a 1% success rate.

A census performed in 1998 estimated that 1.3 million breeding pairs occurred worldwide.

One recent study estimated that the UK's grouse moors ought to support 499 breeding pairs of hen harriers; a survey found only five breeding pairs.