Wednesday, December 30, 2020

Ever See a Baby Nene?

A what?  

The Nene is the Hawai'i state bird.  It looks a lot like a Canadian Goose, but in fact is a bird found only in Hawai'i.  Descended from some geese that arrived here about 500k years ago, Nene have decidedly different genetic makeup from their mainland relatives, and now have evolved unique physical and behavioral traits.  They spend almost no time in the water, have much less webbing on their feet, they are slightly smaller and have unique striations on their necks, and they tend to have fewer offspring. Also, they don't migrate long distances, though they do fly and do move seasonally from one area to another at higher or lower elevations, probably in response to food availability (escaping from freezing temperatures and blizzards isn't necessary).

Canadian Goose
Hawaiian Goose
Nene evolved without fear of the usual predators that Canadian geese have to deal with -- foxes, bears, raccoons, bobcats, etc. because until humans arrived there were only two mammals in the islands, the monk seal and a unique species of bat.  Neither of these was interested in tasting a goose. Their only threat came from two endemic birds of prey -- the Hawaiian Hawk ('Io) and the Hawaiian Owl (Pueo).  When humans arrived about 1000 years ago and brought with them other non-human mammalian predators (dogs, pigs, cats, mongoose, rats), Nene were nearly wiped out.  In the 1950's only about 50 survived, down from as many as 25k.  Vigorous captive breeding and reintroduction efforts have now raised that back to about 2500 birds.  They also seem to be breeding well these days, thanks in part to humans creating some attractive habitat, especially golf courses.

At the course where Karen often plays they love the open fairways bordered by trees, grass, and shrubs, and about this time each year mating pairs show up to nest and raise their goslings. Several weeks ago she counted at least 10 nesting pairs, and now the little offspring have started to venture out to forage with their parents.  On her recent outings she has seen at least 10 babies and has gotten photos of several family groups out and about. Enjoy them -- few people get to witness these rare and magnificent birds.

Babies are between parents' legs

Same family.

Easier to see all three. Two are resting.

Another family of three.

Good view of the three babies.

One more family. Dad is on guard duty.

1 comment:

SimoneStan said...

Thank you so much for the wonderful photos of the baby Nenes. I’ve seen the adults is past visits to the islands but never the young ones.