buteo_age: Estimate the age of juvenile buzzards based on wing length
In mottensmann/MyR: Collection of Custom Functions

Buzzard age is estimated based on a standard growth curve modeled from published data by Rob G. Bijlsma (1999)

1 2	buteo_age(df = NULL, wing = "wing", sex = "sex", unit = c("mm", "cm"), .plot = F)

`df`	data frame containing data
`wing`	column name for wing measurements
`sex`	column name giving the sex of individuals or NULL
`unit`	unit of values. By default in mm

Bijlsma, RG 1999: Sex determination of nestling Common Buzzards Buteo buteo. Limosa 72, 1.10

1 2	## 240 mm wing length buteo_age(data.frame(wing = c(240,240), sex = c("male","female")))

mottensmann/MyR documentation built on May 20, 2019, 8:02 p.m.

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