who is who on the nest
13.06 - ringing day
Biometrics
VX7910 + 1FT4
Wing = 275 mm; Beak = 93 mm; Leg = 159 mm; Weight = 2400 g
VX7911 + Foot-Mounted Locator
Wing = 284 mm; Beak = 101 mm; Leg = 165 mm; Weight = 2700 g
VX7912 +Foot-Mounted Locator
Wing = 270 mm; Beak = 98 mm; Leg = 158 mm; Weight = 2500 g
29.06
marika.solo wrote: ↑29 Jun 2026, 08:22
Our trio were likely more or less identical in size across all measured parameters at the time of ringing. It is highly unusual for a transmitter to be fitted to the youngest chick; on the contrary, it is typically only the most developed or eldest chick that receives one. However, judging by appearances (having the least nestling down) and behaviour (such as the most intensive wing training), it seems that the eldest chick on this nest was the one that did not receive a transmitter. Or was that intentional?
continuation:
For VX7910 + 1FT4 and VX7912 + Foot-Mounted Locator, these were minimal differences. Weight probably decided it, rather than wing or leg length. (Females tend to have shorter bills, but at this age, I guess it's not a decisive indicator of sex yet)
VX7910 + 1FT4 i VX7912 + Foot-Mounted Locator – to były minimalne różnice, prawdopodobnie zdecydowała waga, a nie długość skrzydła czy nogi (samice miewają krótsze dzioby, ale w tym wieku nie jest to jeszcze decydujący wskaźnik płci).
