His best year was in 1939 when he saw 497 species.

However, this species has only been seen in numbers since the 2000s, with 500 reported as of 2009.

About 150 or more species may be seen during winter.

Previous to this, the species had not been seen since 1891.

Many species of birds can be seen in the park.

This species has never been seen alive, so nothing is known of its behavior.

Due to development these species are now rarely seen in the area.

To his knowledge, the species had only been seen alive twice until then.

This species is usually seen after heavy rain during spring and summer.

The species has not been seen since it was discovered three decades ago.