It was great this morning for my arrival at 09.00 coincided with the first birds of day on the trays at Leighton Moss RSPB Reserve. Up to now there had been very few sightings. In the end there were three pairs each with their own grit tray, which was great for we could tell who was paired to whom.If you got three or more birds on a tray there was much aggression and chasing.
On my return home I quickly looked up the colour combinations of these three pairs and their sighting history. The oldest bird, a male was first ringed in 2014 so is in his 4th year. His mate was first ringed as a juvenile in July 2016. In 2016 they were both paired to other birds but by October 10th 2017 they were obviously paired and we seen on the grit trays together on 5 days in October and early November. One assumes that their previous mates had died. On May 4th this year they were recorded feeding a brood in one of our nest boxes and the sighting today proved they were still together.
Another pair were both first ringed as juveniles in 2017. They had formed a pair on their first sighting on the grit trays on 18th October and were recorded together on four other occasions to early November. The male was seen on May5th near one of our nest boxes but the female was not identified. But today's sighting shows they have remained together.
The third pair is the one I posted about 10 days ago when they were the first pair to be recorded gritting this season. They were both 2016 birds and were seen together on 8 times in the 2016 season and no fewer than 13 times in the 2017 season. They were seen together at a nest box on March 4th this year and have already been recorded together on four days this September.
These sightings conclusively prove that Bearded Tit pairs remain together as long as they both survive of course. Few other passerine species exhibit this behaviour.