1. It might make a nest in your garden.

pterodactyl
chaffinch
cormorant

2. Where you might sit to eat outdoors.

patio
pavement
parlour

3. A statue for your lawn.

gnat
midget
gnome

4. A girl's garden play house.

A housie
A tea-house
A wendyhouse

5. It shows where the wind is blowing from.

weathercock
wind compass
blow bird

6. You might find a duck in it.

hanging basket
pond
ducking stool

7. It grows up the wall.

clamber
crawler
creeper