1.   The mating pair of mute swans had lived on the canal for some years, but were found dead by neighbours.

2.   There was some speculation that an extra male, or males, held the mating pair together to brace them for mating.

3.   But Tillier said he believes he and the others have picked a nest that will likely be used by a mating pair of eagles.

4.   The fact that the male and female were together was another hint, as ivory bill mating pairs stay together while pileateds generally do not.