Tuesday, March 10, 2009

#6 Purple Gallinule vs #11 Heerman's Gull

Purple Gallinule

  • Despite its awkward flight, Purple Gallinule's have turned up in the northern US and southern Canada.
  • Purple Gallinule's have the ability to walk on top of floating vegetation.
  • They typically hold their food with one of their feet while they are eating.
  • Gallinules are closely related to the rails.
  • Purple Gallinules typically nest very early in the year with young birds having been seen as early as February.

Click here to view more information on Purple Gallinules.

For pictures of Purple Gallinules, click here.

Heermann's Gull

  • Heermann's Gulls are known to steal food from other birds especially Brown Pelican's. It has been observed that adults typically steal from adults while juveniles steal from other juveniles.
  • The Heermann's Gull is the only gull in the United States that breeds south of the border and travel north to the US to spend the non-breeding season.
  • They have recently started to attempt to breed in California but have so far been unsuccessful.
  • About 90% of the 150,000 known pairs nest on Isla Rasa off Baja California in the Gulf of California.
  • Due to the limited breeding range these gulls the islands that they nest on need to be protected from egg harvesting, introduced mammals, industrial development for guano extraction, and tourism.

Click here to view more information on Heermann's Gulls.

For pictures of Heermann's Gulls, click here.


Unknown said...

Great information. They are an interesting bird.

Amar Ayyash said...

Besides Heermann's, Yellow-footed Gulls also breed south of the border and make a northern post-breeding dispersal into the United States (albeit on a smaller scale than Heermann's).