oaw - Glaslyn family tree

An updated chart - produced by the Glaslyn project" showing the breeding success of MrsG at Glaslyn, North Wales.
Since 2004 she has produced 50 chicks, some of which have survived to breed themselves - indeed, there are now some "great grand chicks" that have been re-sighted [well, one seen in Senegal in 2022].

So, MrsG has hatched 50 chicks with two different males ...
Of these 16 have been known to survive to breeding age [or their first out-migration].
Between them, they have produced approximately 130 chicks [the grand-chicks].
of these, five are known to have bred, producing a dozen great grand chicks [one of which was seen in Senegal in 2022].

Bear in mind, not every chick is ringed, and not every breeding pair is monitored - the "net" has some very large holes in it - there are something like 250 breeding pairs in the UK alone. [and not every chick returns to breed in the UK, some migrate / breed in other areas of Europe].

That is an exceptional achievement !

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